Publications
Last Update April 2024
- “DFT-based design of topotactic ion-exchange reaction in solid-state oxides”
I. Suzuki, M. Kita, T. Omata
Chem. Mater., (2024) - “Low-temperature growth of BaZrO3 and Ba(Zr,Y)O3 thin films via spray pyrolysis deposition”
I. Suzuki, H. Tawarayama, M. Majima, T. Omata
Thin Solid Films, 792, 140249 (2024) - “High proton conductivity and thermal stability at intermediate temperatures of phosphate glasses and their melts containing rare-earth oxides achieved by high thermal stability of proton carriers”
Tatebayashi, T. Ishiyama, T Kinoshita, T. Fang, Y. Ren, K. Zagarzusem, M. Fujioka, M. Ono, G. Zhao, M. Liu, T. Omata, J. Nishii
Solid State Ionics, 403, 116413 (2023) - “Ambient Aqueous-Phase Synthesis of Highly Stable Methylammonium Tin Iodide Perovskites Using Alkali Iodides and Ascorbic Acid”
K. Yokoyama, T. Omata, S. Yokoyama, H. Takahashi,
ACS Appl. Energy Mater., 6, 11070-11080 (2023). - “Site-dependent luminescence from Pr3+ in double perovskite-type alkaline earth lanthanum tantalates”
K.Ueda, A. Oya, S. Nagashima, T. Ogata, T. Honma, T. Omata
J. Phys. Chem. C, 127, 8833-8839(2023). - “Alkali Mono-Pnictides: A New Class of Photovoltaic Materials by Element Mutation”
Y. Kumagai, S. R. Kavanagh, I. Suzuki, T. Omata, A. Walsh, D. O. Scanlon, H. Morito
PRX Energy, 2, 043002 (2023) - “Carrier control in SnS by doping: A review”
I. Suzuki
J. Ceram. Soc. Jpn. 131, 777-788 (2023) - “Enhancing proton mobility and thermal stability in phosphate glasses with WO3: The mixed glass former effect in proton conducting glasses”
S. Aman, I. Suzuki, T. Ishiyama, T. Omata
Phys. Chem. Chem. Phys., 25, 18766-18774 (2023) <<Selected as a Hot Article>> - “High open-circuit voltage in single-crystalline n-type SnS/MoO3 photovoltaics”
I. Suzuki, Z. Lin, T. Nogami, S. Kawanishi, B. Huang, A. Klein, T. Omata
APL Mater., 11, 031116 (2023) <<Selected as an Editor’s Pick>> - “Pulsed laser deposition of β-NaGaO2: significant dependence of sodium fraction, morphology, and phases of the film on deposition position in the plume”
S. Suzuki, I. Suzuki, T. Omata
Jpn. J. Appl. Phys. 62, 035502 (2023). - “Experimental Identification of Atomic Orbital Contributions to SnS Valence Band using Polarization-Dependent Angle-Resolved Photoemission Spectroscopy”
I. Suzuki, S. Kawanishi, K. Tanaka, T. Omata, S Tanaka
Phys. Status Solidi B, 2200408 (2023). - “Avoiding Fermi level pinning at SnS interface for high open-circuit voltage”
I. Suzuki, B. Huang, S. Kawanishi, T. Omata, A. Klein
J. Phys. Chem. C, 126, 20570 (2022). - “中温作動電気化学デバイスのためのプロトン伝導性リン酸塩ガラス電解質”
石山智大, 小俣孝久
セラミックス 57, (2022). - “Visualization of polysulfide dissolution in lithium-sulfur batteries using in-situ NMR microimaging”
A. Dorai, J. Kawamura, T. Omata
Electrochem. Commun., 141, 107360 (2022). - “Phase Transformation of Metastable Cu2ZnGeO4 with a Wurtz–Kesterite Structure at Elevated Temperatures”
M. Kita, I. Suzuki, N. Wada, T. Omata
Inorg. Chem., 61, 35, 13700-13707 (2022). - “Current status of n-Type SnS: Paving the way for SnS homojunction solar cells” [Invited review]
I. Suzuki, S. Kawanishi, T. Omata, H. Yanagi
J. Phys. Energy, 4, 042002 (2022). - “Growth of β-NaGaO2 thin films using ultrasonic spray pyrolysis”
I. Suzuki, S. Suzuki, T. Watanabe, M. Ktia, T. Omata
J. Asian Ceram. Soc., 10, 2, 520-529 (2022). - “Contribution of the Sn 5s state to the SnS valence band: direct observation via ARPES measurements”
I. Suzuki, S. Kawanishi, K. Tanaka, T. Omata, S. Tanaka
Electron. Struct. 4. 025004 (2022). - “Site-dependent Tb3+ luminescence by energy transfer from Ce3+ in Ce3+–Tb3+ co-doped LaLuO3”
S. Nagashima, K. Ueda, T. Omata
J. Phys. Chem. C, 126, 6499-6504 (2022). - “Origin of the Temperature Dependence of Proton Conductivity in Phosphate Glass Prepared by Alkali-Proton Substitution Technique”
T. Ishiyama, T. Yamaguchi, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
J. Electrochem. Soc. 169, 034517 (2022). - “Anhydrous Silicophosphoric Acid Glass: Thermal Properties and Proton Conductivity”
T. Omata, A. Sharma, I. Suzuki, T. Ishiyama, S. Kohara, K. Ohara, M. Ono, Y. Ren, K. Zagarzusem, M. Fujioka, G. Zhao, J. Nishii
ChemPhysChem, 23, e202100840 (2022) - “Proton-conducting phosphate glass: Recent development as an electrolyte in intermediate temperature fuel cells”
T. Ishiyama, T. Yamaguchi, T. Omata
J. Ceram. Soc. Jpn. 130, 1-9 (2022) <<Selected as a front cover>> - “Direct evaluation of hole effective mass of SnS–SnSe solid solutions with ARPES measurement”
I. Suzuki, Z. Lin, S. Kawanishi, K. Tanaka, Y. Nose, T. Omata, S. Tanaka
Phys. Chem. Chem. Phys., 2022, 24, 634-638 (2022) - “First Principles Calculation of Electrical and Optical Properties of Cu3AsO4: Promising Thin-Film Solar Cell Absorber from Nonferrous Metal Manufacturing By-Products”
I. Suzuki, S. Kawanishi, N. Ohashi, A. Gomi, J. Kano, H. Watanabe, S. Asano, T. Omata
Mater. Trans., 63, 73-81 (2022) - “N-Type Electrical Conduction in SnS Thin Films”
I. Suzuki, S. Kawanishi, S. R. Bauers, A. Zakutayev, Z. Lin, S. Tsukuda, H. Shibata, M. Kim, H. Yanagi, T. Omata
Phys. Rev. Mater., 5, 125405 (2021) - “Investigating the role of GeO2 in enhancing the thermal stability and proton mobility of proton-conducting phosphate glasses”
T. Omata, A. Sharma, T. Kinoshita, I. Suzuki, T. Ishiyama, S. Kohara, K. Ohara, M. Ono, T. Fang, Y. Ren, M. Fujioka, G. Zhao, J. Nishii
J. Mater. Chem. A. 9, 20595−20606 (2021) - “Enhanced Valley Splitting of Exciton Emission in Colloidal PbSe Quantum Dots When the Interdot Distance Coincides with Onset of Förster Resonance Energy Transfer”
T. Omata, H. Asano, M. Sakai, Y. Terai, M. Kita
J. Phys. Chem. Lett. 12, 3120-3126(2021). - “SnS Homojunction Solar Cell with n‐Type Single Crystal and p‐Type Thin Film”
S. Kawanishi, I. Suzuki, S. R. Bauers, A. Zakutayev, H. Shibata, H. Yanagi, T. Omata
Solar RRL, 5, 2000708 (2021) - “Understanding the effect of oxide components on proton mobility in phosphate glasses using a statical analysis approach”
T. Omata, I. Suzuki, A. Sharma, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe
RSC Adv. 11, 3012−3019(2021). - “Zn(Te1−xSex) quantum dots synthesized through a facile route and their band-edge and surface state driven visible-light emission”
S. Tsukuda, M. Kita, T. Omata,
J. Lumin. 231,117829 (2021). - “White-Light Emission from Zinc Chalcogenide Alloy Quantum Dots with Gradient Compositions”
T. Omata, H. Asano, S. Tsukuda, M. Kita,
J. Lumin. 232, 117876 (2021). - “Carbon vacancies and hydroxyls in graphitic carbon nitride: Promoted photocatalytic NO removal activity and mechanism”
Z. Gu, Z. Cui, Z. Wang, K. S. Qin, Y. Asakura, T. Hasegawa, S. Tsukuda, K. Hongo, R. Maezono, S. Yin,
Appl. Catal. B Environ., 279, 15 (2020). - “Fermi Energy Limitation at β-CuGaO2 Interfaces Induced by Electrochemical Oxidation/Reduction of Cu”
I. Suzuki, B. Huang, T. Omata, A. Klein,
ACS Appl. Energy Mater., 3, 9117-9125 (2020). - “Surface modification of soda−lime−silicate glass via the high-temperature electrochemical injection of tin ions”
S. Miyasaka, T. Ishiyama, M. Nakano, K. Yanagihara, Y. Hayashi, T. Omata,
Appl. Surf. Sci. 532, 147421 (2020) - “Growth of large single crystals of n-type SnS from halogen-added Sn flux”
S. Kawanishi, I. Suzuki, T. Ohsawa, N. Ohashi, H. Shibata, T. Omata,
Cryst. Growth. Design, 20, 5931-5939 (2020) - “Alkali-assisted hydrothermal preparation of g-C3N4/rGO nanocomposite swith highly enhanced photocatalytic NOx removal activity”
Z. Gu, B. Zhang, Y. Asakura, S. Tsukuda, H. Kato, M. Kakihana, S. Yin,
Appl. Surf. Sci. 521, 146213 (2020). - “Ultra-thin phosphate glass exhibiting high proton conductivity at intermediate temperatures”
I. Suzuki, M. Tashiro, T. Yamaguchi, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe,T. Omata,
Int. J. Hydrogen Energy, 45, 15590 (2020) - “Quantum dot phosphors free from hazardous elements: Current status and prospects for established materials and new ZnTe-based alloys”
S. Tsukuda, T. Omata,
J. Soc. Inf. Disp. 28, 680-690 (2020) Invited Review <<Selected as front cover image>> - “Thermal stability and proton conductivity of densely proton injected phosphate glasses containing rare-earth elements”
A. Miyazaki, T. Kinoshita, T. Tatebayashi, T. Fang, Y. Ren, T. Ishiyama, T. Yamaguchi, T. Omata, M. Fujioka, K. Hideo, G. Zhao, J. Nishii,
J. Non-Cryst. Solids 541, 120064(2020) - “Control of the near-surface OH concentration of float glass by anodic proton injection”
S. Miyasaka, T. Ishiyama, Y. Hayashi, T. Omata,
J. Am. Ceram. Soc. 103, 3642-3649 (2020) - “Formation of spherical, rod- and branch-shaped colloidal In2O3 nanocrystals through simple thermolysis of an oleate precursor”
S. Tsukuda, H. Uesugi, M. Kita, T. Omata
Mater. Trans. 61,462-468 (2020) - “Fabrication and Morphological Control of Ni-Based Nanowires by Self-Assembled Solution Synthesis”
S. Tsukuda, T. Omata
Mater. Trans. 60, 2188−2194(2019) . - “Transport properties of proton conducting phosphate glass: An electrochemical hydrogen pump enabling the formation of dry hydrogen gas”
T. Ishiyama, H. Kishimoto, K. Yamaji, T. Yamaguchi, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
Int. J. Hydrogen Energy 44, 24977-24984(2019). - “Comprehensive first-principles study of AgGaO2 and CuGaO2 polymorphs”
I. Suzuki, Y. Iguchi, C. Sato, H. Yanagi, N. Ohashi, T. Omata
J. Ceram. Soc. Jpn. 127, 339-347 (2019). - “Proton transport properties of proton-conducting phosphate glasses at their glass transition temperatures”
T. Omata, T. Yamaguchi, S. Tsukuda, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe,
Phys. Chem. Chem. Phys. 21, 10744-10749 (2019). - “Tunable Direct Band Gap of β-CuGaO2 and β-LiGaO2 Solid Solutions in the Full Visible Range”
I. Suzuki, Y. Mizuno, T. Omata
Inorg. Chem. 58, 4262-4267 (2019). - “The energy level of the Fe2+/3+-transition in BaTiO3 and SrTiO3 single crystals”
I. Suzuki, L.Gura, A. Klein
Phys. Chem. Chem. Phys. 21, 6238 (2019). - “Flux Growth of β-NaGaO2 Single Crystals”
I. Suzuki, A. Kakinuma, M. Ueda, T. Omata
J. Cryst. Growth. 504, 26 (2018). - “Proton-conducting phosphate glass and its melt exhibiting high electrical conductivity at intermediate temperatures”
T. Yamaguchi, S. Tsukuda, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
J. Mat. Chem. A, 6, 23628-23637 (2019). <<Selected paper: A top 5% most-read Q4 2018>> - “Controlling the electrical conductivity of ternary wurtzite-type and metastable β-AgGaO2 by impurity doping”
H. Nagatani, I. Suzuki, S. Takemura, S. Fujimoto, T. Omata
AIP Advances, 8, 85203-1-9 (2018). - “Catalytic CO oxidation of palladium nanoparticles formed by one-step synthesis on polycarbosilane nanowires”
S. Tsukuda, A. Idesaki, M. Sugimoto, S. Seki, and T. Omata
Mater. Res. Express. 5, 085003, (2018). - “Colloidal Zn(Te,Se)/ZnS core/shell quantum dots exhibiting narrow-band and green photoluminescence”
H. Asano, S. Tsukuda, M. Kita, S. Fujimoto, T. Omata
ACS Omega, 3, 6703-6709 (2018). - “Fabrication of Au nanoparticles on poly(vinylpyrrolidone) nanowires exhibiting reversible frequency change of localized surface plasmon resonance”
S. Tsukuda, S. Seki, M. Omichi, M. Sugimoto, A. Idesaki, T. Sekino, T. Omata
AIP Advances 8, 015314 (2018). - “Dense proton injection into phosphate glasses using corona discharge treatment
T. Kinoshita,A. Miyazaki, K. Kawaguchi, D. Sakai,T. Yamaguchi, T. Omata, T. Ishiyama, M. Fujioka, H. Kaiju, J. Nishii
Appl. Surf. Sci. 428, 718-722 (2018). - “Mobility of Proton Carriers in Phosphate Glasses Depends on Polymerization of Phosphate Framework”
T. Yamaguchia, T. Kataoka, S. Tsukuda, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
Phys. Chem. Chem. Phys. 19, 29669–29675 (2017). - “Formation of Amorphous H3Zr2Si2PO12 by Electrochemical Substitution of Sodium Ions in Na3Zr2Si2PO12 with Protons”
S. Tsukuda, K. Miyake, T. Yamaguchi, M. Kita, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
Inorg. Chem. 56, 13949-13954 (2017). - “Wurtzite-derived quaternary oxide semiconductor Cu2ZnGeO4; its structural characteristics, optical properties and electronic structure”
M. Kita, I. Suzuki, N. Ohashi, T. Omata
Inorg. Chem. 56, 14277−14283(2017). - “Orientation control of β-NaGaO2 thin film: a precursor for β-CuGaO2 as a thin-film solar cell absorber”
I. Suzuki, M. Tanemura, T. Omata
J. Ceram. Soc. Jpn., 125, 872-875(2017). - “Synthesis of Colloidal Zn(Te,Se) Alloy Quantum Dots”
H. Asano, K. Arai, M. Kita, T. Omata
Mater. Res. Express 4, 106501(2017). - “Fabrication of β-CuGaO2 thin-films by ion-exchange of β-NaGaO2 thin-films”
I. Suzuki, H. Nagatani, M. Kita, T. Omata
Appl. Phys. Express 10, 095501(2017). - “Variation of crystal structure and optical properties of wurtzite-type oxide semiconductor alloys of β-Cu(Ga,Al)O2”
H. Nagatani, Y. Mizuno, I. Suzuki, M. Kita, N. Ohashi, T. Omata
J. Appl. Phys. 121, 235103 (2017). - “Effect of alkaline-earth species in phosphate glasses on mobility of proton carriers”
T. Yamaguchi, Y. Saito, Y. Kuwahara, H. Yamashita, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
J. Mater. Chem. A 5, 12385–12392 (2017). - “Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)”
S. Tsukuda, K. Okamoto, H. Yamamoto, T. Kozawa, T. Omata
Jpn. J. Appl. Phys. 56, 06GG06 (2017). - “Design of Cadmium-free Colloidal II-VI Semiconductor Quantum Dots Exhibiting RGB Emission”
H. Asano, T. Omata
AIP Advances 7, 045309 (2017). - “Multinary wurtzite-type oxide semiconductors: present status and perspectives”
I. Suzuki, T. Omata
Semicond. Sci. Technol. 32, 013007(2017) - “First-principles study of CuGaO2 polymorphs: Delafossite α-CuGaO2 and wurtzite β-CuGaO2”
I. Suzuki, H. Nagatani, M. Kita, Y. Iguchi, C. Sato, H. Yanagi, N. Ohashi, T. Omata
Inorg. Chem. 55, 7610−7616(2016). - “High temperature phases with wurtzite-derived structure in Zn2LiGaO4–ZnO alloy system”
M. Kita, T. Fukada, S. Yamaguchi, T. Omata
J Alloys Comp. 688, 69-76 (2016). - “First principles calculations of ternary wurtzite β-CuGaO2”
I. Suzuki, H. Nagatani, M. Kita, Y. Iguchi, C. Sato, H. Yanagi, N. Ohashi, T. Omata
J. Appl. Phys. 119, 095701 (2016). - “Relationship between structure and mobility of proton carriers injected by electrochemical substitution of sodium ions with protons in 35NaO1/2-1WO3-8NbO5/2-5LaO3/2-51PO5/2-based glasses”
T. Yamaguchi, T. Ishiyama, K. Sakuragi, J. Nishii, T. Yamashita, H. Kawazoe, N. Kuwata, J. Kawamura, T. Omata
Solid State Ionics 288, 281–285(2016). - “Anisotropic Swelling of Hydrogel Nanowires Based on Poly(vinylpyrrolidone) Fabricated by Single Particle Nanofabrication Technique”
S. Tsukuda, M Omichi, M. Sugimoto, A. Idesaki, V. S. Padalkar, S. Seki
J. Polym. Sci. Part B Polym. Phys. 54, 1950-156(2016). - “Fabrication of Pt Nanoparticle Incorporated Polymer Nanowires by High Energy Ion and Electron Beam Irradiation”
S. Tsukuda, R. Takahasi, S. Seki, M. Sugimoto, A. Idesaki, M. Yoshikawa, and S.-I. Tanaka
Radiat. Phys. Chem. 118, 16-20(2016). - “Colloidal semiconductor quantum dots; syntheses, properties and applications”
T. Omata
J. Ceram. Soc. Jpn. 123, 1-8(2015). - “Phase separation and crystallization in sodium lanthanum phosphate glasses induced by electrochemical substitution of sodium ions with protons”
K. Kawaguchi, T. Yamaguchi, T. Omata, T. Yamashita, H. Kawazoe, J. Nishii
Phys. Chem. Chem. Phys. 17, 22855-22861(2015). - “高品位銅マットからのNi, Co濃縮相の抽出分離”
門前兼廣, 松尾伸也, 小俣孝久
J. MMIJ 131, 487-496 (2015). - “Structural change of NaO1/2-WO3-NbO5/2-LaO3/2-PO5/2 glass induced by electrochemical substitution of sodium ions with protons”
T. Ishiyama, T. Yamaguchi, J. Nishii, T. Yamashita, H. Kawazoe, N. Kuwata, J. Kawamura, T. Omata
Phys. Chem. Chem. Phys.17, 13640-13646(2015). - “Improving thermal stability and its effects on proton mobility in proton-conducting phosphate glasses prepared by the electrochemical substitution of sodium ions with protons”
T. Yamaguchi, T. Ishiyama, K. Sakuragi, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
Solid State Ionics 275, 62–65 (2015). - “Wurtzite-derived ternary I-III-O2 semiconductors”Review PaperOPEN Access
T. Omata, H. Nagatani, I. Suzuki, M. Kita
Sci. Technol. Adv. Mater. 16, 024902 (2015). - “Widely bandgap tunable amorphous Cd-Ga-O oxide semiconductors exhibiting electron mobilities ≥10 cm2V−1s−1”
H. Yanagi, C. Sato, Y. Kimura, I. Suzuki, T. Omata, T. Kamiya, H. Hosono
Appl. Phys. Lett. 106, 082106(2015) - “Structural and thermal properties of a ternary narrow gap oxide semiconductor; wurtzite-derived β-CuGaO2”
H. Nagatani, I. Suzuki, M. Kita, M. Tanaka, Y. Katsuya, O. Sakata, S. Miyoshi, S. Yamaguchi, T. Omata
Inorg. Chem. 54, 1698−1704 (2015). - “Synthesis of size-controlled colloidal InAs quantum dots using triphenylarsine as a stable arsenic source”
H. Uesugi, M. Kita, T. Omata
J. Cryst. Growth 416, 134–141 (2015). - “硫化製錬における非鉄金属とNaのマット‐スラグ間の分配”
門前兼廣, 松尾伸也, 小俣孝久
J. MMIJ, 131, 65-73(2015). - “Syntheses of colloidal chalcogenides and oxides nanocrystals and their applications”Review Paper
T. Omata
J. Ceram. Soc. Jpn. 123, 1-8(2015). - “Structure of β-AgGaO2; ternary I-III-VI2 oxide semiconductor with a wurtzite-derived structure”
H. Nagatani, I. Suzuki, M. Kita, M. Tanaka, Y. Katsuya, O. Sakata and T. Omata
J. Solid State Chem. 222, 66–70(2015). - “Fabrication of Thermoresponsive Nanoactinia Tentacles by a Single Particle Nanofabrication Technique”
M. Omichi, H. Marui, V. S. Padalkar, A. Horio, S. Tsukuda, M. Sugimoto, and S. Seki
Langmuir 31, 11692-11700(2015). - “α-PbO2-Related Phase Appearing in the SnIV-Ta-O System Transformed from Cation-Ordered Fluorite-Related Phase”
M. Kita, T. Omata, S. Otsuka-Yao-Matsuo, M. Katada
J. Ceram. Soc. Jpn. 122, 902-907(2014). - “Facile synthesis of colloidal InAs nanocrystals using triphenylarsine as an arsenic source”
H. Uesugi, M. Kita, T. Omata
J. Cryst. Growth 405, 39–43 (2014).. - “Electronic Transition Responsible for Size-Dependent Photoluminescence of Colloidal CuInS2 Quantum Dots”
T. Omata, K. Nose, K. Kurimoto and M. Kita
J. Mater. Chem. C, 2, 6867–6872 (2014). - “Enhancement by praseodymium addition of catalytic activity of nickel supported on cerium–zirconium oxide in methane steam reforming”
T. Ishiyama, K. Kurimoto, S. Otsuka-Yao-Matsuo, T. Omata
J. Ceram. Soc. Jpn. , 122, 537-542(2014). - “廃棄物の硫化製錬における非鉄金属元素のマット、スラグ間の分配”
門前兼廣, 小俣孝久, 松尾伸也,
J. MMIJ, 130, 115-124 (2014). - “Phase determination of zinc selenide nanocrystals depending on the ligand species of precursor complexes”
T. Omata, H. Uesugi, M. Kita,
J. Cryst. Growth 394, 81-88(2014). - “Wurtzite CuGaO2: A direct and narrow band gap oxide semiconductor applicable to solar cell absorber”
T. Omata, H. Nagatani, I. Suzuki, M. Kita, H. Yanagi and N. Ohashi,
J. Am. Chem. Soc. 136, 3378-3381(2014). - “Electrochemical Substitution of Sodium Ions with Protons in Phosphate Glass to Fabricate Pure Proton Conducting Glass at Intermediate Temperatures”
T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
J. Mater. Chem. A, 2, 3940-3947(2014). - “Synthesis of Colloidal Solution of β-LiGaO2 Nanocrystals Capped with Organic Surfactant”
K. Takahashi, Y. Maeda, T. Suehiro, M. Kita, T. Omata,
J. Ceram. Soc. Jpn. 122, 195-197(2014). - “A simple and rapid method for high-resolution Visualization of Single-ion Tracks”
M. Omichi, W. Choi, D. Sakurai, S. Tsukuda, M. Sugimoto, and S. Seki,
AIP Adv. 4, art. No. 117128(2014). - “Fabrication of Enzyme-degradable and Size-controlled Protein Nanowires Using Single Particle Nano-fabrication Technique”
M. Omichi, A. Asano, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, D. Sakamaki, A. Onoda, T. Hayashi, and S. Seki,
Nature Communications 5, art. No. 3718(2014). - “Spatial Point Analysis of Ion Track Patterns Using Common Polymer Films by Atomic Forced Microscopy”
M. Omichi, W. Choi, S. Tsukuda, M. Sugimoto, and S. Seki,
J. Photopolym. Sci. Technol. 27, 561-564(2014). - “Proton conducting tungsten phosphate glass and its application to the intermediate temperature fuel cell”
T. Ishiyama, S. Suzuki, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
Solid State Ionics 262, 856 (2013) - “Pseudo-Binary Alloying System of ZnO-AgGaO2 Reducing the Energy Band Gap of Zinc Oxide”
I. Suzuki, H. Nagatani, Y. Arima, M. Kita and T. Omata,
Appl. Phys. Lett. 103, 222107 (2013). - “Fabrication of β-AgGaO2 thin film by rf-magnetron sputtering”
I. Suzuki, H. Nagatani, Y. Arima, M. Kita and T. Omata,
Thin Solid Films, 559, 112 (2013) - “Electrochemical Substitution of Alkali Ions in Tungsten Phosphate Glass with Protons”
T. Ishiyama, S. Suzuki, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata,
J. Electrochem. Soc. 160, E143-E147 (2013). - “Fabrication of ZnF2 Thin Films and Their Vacuum Ultraviolet Transparency”
I. Suzuki, T. Omata, Y. Shiratsuchi, R. Nakatani, N. Kitamura, S. Otsuka-Yao-Matsuo,
Thin Solid Films, 534, 508 (2013). - “Impact of the Electrical Forming Process on the Resistance Switching Behaviors in Lanthanum-Doped Strontium Titanate Ceramic Chip Devices”
S. Hirose, H. Niimi, K. Kageyama, A. Ando, H. Ieki, T. Omata,
Jpn. J. Appl. Phys. 52, 045802 (2013). - “Poly(vinylphenol) Nanowires Including Au Nanoparticles Formed by Single Nanofabrication Technique”
S. Tsukuda, M. Sugimoto, A. Idesaki, A. Asano, S. Seki, and S.-I. Tanaka,
Radiat. Phys. Chem. 84, 39-41(2013). - “Sugar Nanowires Based on Cyclodextrin on Quarz Crystal Microbalance for Gas Sensing with Ultra-hgih Sensitivity”
A. Asano, Y. Maeyoshi, S. Watanabe, A. Saeki, M. Sugimoto, M. Yoshikawa, H. Nanto, S. Tsukuda, S.-I. Tanaka, and S. Seki,
Radiat. Phys. Chem. 84, 196-199(2013). - “Fullerene Nanowires Produced by Single Particle Nanofabrication Technique and Their Photovoltaic Applications”
S. Suwa, Y. Maeyoshi, S. Tsukuda, M. Sugimoto, A. Saeki, and S. Seki,
J. Photopolym. Sci. Technol. 26, 193-197(2013). - “Synthesis of Sm-doped TiO2 Nanotube and Analysis of Its Methylene Blue Removal Properties under Dark and UV Irradiated Conditions”
D. J. Park, T. Sekino, S. Tsukuda, and S.-I. Tanaka,
Res. Chem. Intermed. 39, 1581-1591(2013). - “Degradation of potential barriers in ZnO-based chip varistors due to electrostatic discharge”
S. Hirose, H. Niimi, K. Kageyama, H. Ieki, T. Omata, S. Otsuka-Yao-Matsuo,
J. Appl. Phys. 112, 033707/1-11 (2012). - “Structural variation and optical properties of ZnO-LiGaO2 pseudo-binary system”
T. Omata, M. Kita, K. Tachibana and S.Otsuka-Yao-Matsuo,
J. Solid State Chem. 188, 92-99(2012). - “Ultraviolet electroluminescence from colloidal ZnO quantum dots in an all-inorganic multilayer light-emitting device”
T. Omata, Y. Tani, S. Kobayashi, K. Takahashi, A. Miyanaga, Y. Maeda and S. Otsuka-Yao-Matsuo,
Appl. Phys. Lett. 100, 061104(2012). - “Quantum Dot Phosphors and Their Application to Inorganic Electroluminescence Device”Review Paper
T. Omata, S. Kobayashi, Y. Tani, S. Otsuka-Yao-Matsuo,
Thin Solid Films 520, 3829-3834(2012). - “Fullerene Nanowires as a Versatile Platform for Organic Electronics”
Y. Maeyoshi, A. Saeki, S. Suwa, M. Omichi, H. Marui, A. Asano, S. Tsukuda, M. Sugimoto, A. Kishimura, K. Kataoka, S. Seki,
Scientific Reports 2, art. No. 600(2012). - “Semiconducting Cross-linked Polymer Nanowires Prepared by High-energy Single-particle Track Reactions”
S. Seki, A. Saeki, W. Choi, Y. Maeyoshi, M. Omichi, A. Asano, K. Enomoto, C. Viavakumar, M. Sugimoto, S. Tsukuda, and S.-I. Tanaka,
J. Phys. Chem. B, 116(42), 12857-12863 (2012). - “Fabrication and Arrangement of Clickable Nanowires by the Single-particle Nanofabrication Technique”
A. Asano, M. Omichi, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, and S. Seki,
J. Phys. Chem. C 116(2012)17274-17279. - “Temperture-responsive One-dimensional Nanogels Formed by the Cross-linker-aided Single Particle Nanofabrication Technique”
M. Omichi, H. Marui, K. Takano, S. Tsukuda, M. Sugimoto, S. Kuwabata, and S. Seki,
Appl, Mater. Interfaces 4(2012)5492-5497. - “Fabrication of Nanowires Based on Polystyrene Derivatives by Single Particle Nano-fabrication Technique”
A. Asano, Y. Maeyoshi, K. Takano, M. Omichi, M. Sugimoto, M. Yoshikawa, S. Tsukuda, S.-I. Tanaka, A. Saeki, and S. Seki,
J. Photopolym. Sci. Technol. 25, 685-688(2012). - “Nanostructures and Physicochemical Properties of Pt Nanoparticle-loaded Titania Nanotubes Synthesized by Photoreduction Method”
D. J. Park, T. Sekino, S. Tsukuda, S.-I. Tanaka,
J. Ceram. Soc. Japan 120, 307-310(2012). - “Synthesis of LiGaO2 nanocrystals and their application toward bright UV-emission from ZnO quantum dots”
T. Omata, A. Tazuke K. Nose, S. Otsuka-Yao-Matsuo,
J. Cryst. Growth 330, 9-16 (2011). - “Fabrication of ZnO Films Alloyed with LiGaO2 by RF-Magnetron Sputtering and Their Optical Property”
T. Omata, K. Tanaka, S. Otsuka-Yao-Matsuo,
Jpn. J. Appl. Phys. 50, 061102 (2011). - “Fabrication of Core-Shell-Type Copper Indium Selenide and Zinc Selenide Composite Quantum Dots and Their Optical Properties”
T. Omata, K. Nose and S. Otsuka-Yao-Matsuo,
J. Nanosci. Nanotechnol. 11, 4815-4823(2011). - “Zn2LiGaO4, Wurtzite-Derived Wide Band Gap Oxide”
T. Omata, M. Kita, K. Nose, K. Tachibana, S. Otsuka-Yao-Matsuo,
Jpn. J. Appl. Phys. 50, 031102(2011). - “UV Luminescent Organic-Capped ZnO Quantum Dots Synthesized by Alkoxide Hydrolysis with Dilute Water”
T. Omata, K. Takahashi, S. Hashimoto, Y. Maeda, K. Nose, S. Otsuka-Yao-Matsuo and K. Kanaori,
J. Colloid and Interface Science 355, 274-281(2011). - “Photoluminescence of Samarium-doped TiO2 Nanotubes”
D. J. Park, T. Sekino, S. Tsukuda, A. Hayashi, T. Kusunose, and S.-I. Tanaka,
J. Solid State Chem. 184, 2695-2700(2011). - “Control of Radial Size of Crosslinked Polymer Nanowire by Ion Beam and γ Ray Irradiation”
S. Tsukuda, A. Asano, M. Sugimoto, A. Idesaki, S. Seki, and S.-I. Tanaka,
J. Photopolym. Sci. Technol. 23(2010)231-234. - “Synthesis of Ternary CuInS2 Nanocrystals; Phase Determination by Complex Ligand Species”
K. Nose, Y. Soma, T. Omata and S. Otsuka-Yao-Matsuo,
Chem. Mater., 21, 2607–2613 (2009). - “Size Dependent Optical Band Gap of Ternary I-III-VI2 Semiconductor Nanocrystals”
T. Omata, K. Nose and S. Otsuka-Yao-Matsuo,
J. Appl. Phys. 105, 073106-1-5(2009). - “Synthesis of Y2O3-Doped CeO2 Nanocrystals and Their Surface Modification”
Y. Goto, K. Takahashi, T. Omata and S. Otsuka-Yao-Matsuo,
J. Phys.: Conf. Ser. 165, 012041 (2009). - “Photoluminescence of CuInS2-based Semiconductor Quantum Dots; Its Origin and the Effect of ZnS Coating”
K. Nose, N. Fujita, T. Omata, S. Otsuka-Yao-Matsuo, W. Kato, M. Uehara, H. Nakamura, H. Maeda, H. Kamioka, and H. Hosono,
J. Phys.: Conf. Ser. 165, 012028(2009). - “Colloidal Synthesis of Ternary Copper Indium Diselenide Quantum Dots and Their Optical Properties”
K. Nose, T. Omata and S. Otsuka-Yao-Matsuo,
J. Phys. Chem. C 113, 3455-3460 (2009). - “Syntehsis of CuInS2 Nanocrystals and Their Structural Transformation Triggered by the Ligand Exchange”
K. Nose, Y. Soma, T. Omata and S. Otsuka-Yao-Matsuo,
Chinese Science Bulletin 54, 4008-4008 (2009). - “Novel Wide Band Gap Alloyed Semiconductors, x(LiGaO2)1/2-(1-x)ZnO, and Fabrication of their Thin Films”
T. Omata, K. Tanaka, A. Tazuke, K. Nose, S. Otsuka-Yao-Matsuo,
Science in China Ser. E-Technological Sciences 52, 111-115(2009). - “Extremely Suppressed Grain Growth of Y2O3-Stabilized Zirconia (YSZ) Nanocrystals Synthesized by the Nonhydrolytic Sol-Gel Technique”
Y. Goto, T.Omata, S.Otsuka-Yao-Matsuo,
J. Electrochem. Soc., 156, K4-K9 (2009). - “Formation of Hybrid Nano-structures by Ion Beam Irradiation to the Sol-Gel Film”
S. Tsukuda, S. Seki, M. Sugimoto, A. Idesaki, S. Tagawa, and S.-I. Tanaka,
J. Photopolym. Sci. Technol. 22, 245-248(2009). - “Sugar Nanowires Based on Cyclodextrin Prepared by Single Particle Nanofabrication Technique”
S. Watanabe, A. Asano, S. Seki, M. Sugimoto, M. Yoshikawa, S. Tagawa, S. Tsukuda, and S.-I. Tanaka,
Radiat. Phys. Chem. 78, 1071-1075(2009). - “Formation of Ni3C Nanocrystals of by Thermolysis of Nickel Acetylacetonate in Oleylamine: Characterization using Hard X-ray Photoelectron Spectroscopy”
Y. Goto, K. Taniguchi, T. Omata, S. Otsuka-Yao-Matsuo, N. Ohashi, S. Ueda, H. Yoshikawa, Y. Yamashita, H. Ohashi and K. Kobayashi,
Chem. Mater. 20, 4156-4160(2008). - “Novel Wide Band Gap Semiconductor Alloy; x(LiGaO2)1/2-(1-x)ZnO”
T. Omata, K. Tanaka, A. Tazuke, K. Nose and S. Otsuka-Yao-Matsuo,
J. Appl. Phys. 103, 083706(2008). - “Mixed Dopant Efect in SrZrO3-Bbased Proton Conductor”
T. Omata, T. Fuke and S. Otsuka-Yao-Matsuo,
Solid State Ionics 179, 1116-1119(2008). - “SiC Nanowires Formed by High Energy Ion Beam Irradiation to Polymer Films and Heating”
S. Tsukuda, S. Seki, M. Sugimoto, S. Tagawa, and S.-I. Tanaka,
J. Ceram. Proc. Res. 9, 466-469(2008). - “Multi-functional Polymer Nanowires with Ultra-high Aspect Ratio Produced by Single Particle Nano-fabrication Technique”
S. Seki, S. Watanabe, M. Sugimoto, S. Tagawa, and S. Tsukuda,
J. Photopolym. Sci. Technol. 21, 541-543(2008). - “Nanocrystals of Zirconia and Ceria Based Solid Electrolytes; Syntheses and Properties”
T. Omata, Y. Goto and S. Otsuka-Yao-Matsuo,
Science and Technology of Advanced Materials, 8(6), 524-530(2007). - “Chemical Role of Amines in the Colloidal Synthesis of CdSe Quantum Dots on Their Luminescence Properties”
K. Nose, H. Fujita, T. Omata, S. Otsuka-Yao-Matsuo, H. Nakamura and H. Maeda,
J. Luminescence 126, 21-26 (2007). - “Formation of Isolated Ultrafine Optical Nanofibers by Single Particle Nanofabrication Technique”
S. Seki, S. Tsukuda, S. Tagawa, M. Sugimoto, A. Watanabe, M. Tokuji,
J. Photopolym. Sci. Technol. 20, 125-128(2007). - “Nanowires with Controlled Sizes Formed by Single Ion Track Reactions in Polymers”
S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
Surf. Coat. Technol. 201, 8526-8530(2007). - “Cross-linked Silicon Based Polymer Nanowire Formation by High Energy Charged Particles”
S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
Surf. Coat. Technol. 201, 8486-8489(2007). - “Ion Beam Induced Nano-space Reactions and Nano-wire Formation in Polymers by High Energy Sub-mm Heavy Ion Beams”
S. Tagawa, S. Tsukuda, S. Seki, M. Sugimoto, T. Sato, M. Oikawa, and T. Sakai,
Surf. Coat. Technol. 201,8495-8498(2007). - “Synthesis of CeO2, ZrO2 Nanocrystals and Core-Shell-Type Nanocomposites”
T. Omata, S. Sasai, Y. Goto, M. Ueda and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 153(12), A2269-A2273(2006). - “Hydration Behavior of Ba2Sc2O5 with an Oxygen Deficient Perovskite Structure”
T. Omata, T. Fuke and S. Otsuka-Yao-Matsuo,
Solid State Ionics 177, 2447-2451(2006). - “Tunable Photoluminescence Wavelength of Chalcopyrite CuInS2-Based Semiconductor Nanocrystals Synthesized in a Colloidal System”
H. Nakamura, W. Kato, M. Uehara, K. Nose, T. Omata, S. Otsuka-Yao-Matsuo, M. Miyazaki, and H. Maeda,
Chem. Mater. 18, 3330-3335(2006). - “Characterization of Indium-Tin Oxide Sputtering Targets Showing Various Densities of Nodule Formation”
T. Omata, M. Kita, H. Okada, S. Otsuka-Yao-Matsuo, N. Ono and H. Ikawa,
Thin Solid Films 503, 22-28 (2006). - “Correlation between Roughness of Nanowires and Polymer Backbone Conformation”
S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
Macromolecules 39, 7446-7450(2006). - “Customized Morphologies of Self-condensed Multi-segment Polymer Nanowires”
S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
J. Phys. Chem. B 110, 19319-19322(2006). - “Self-condensed Nanoparticles of Oligofluorenes with Water Soluble Chains”
Y. Koizumi, S. Seki, S. Tsukuda, S. Sakamoto, and S. Tagawa,
J. Am. Chem. Soc. 128, 9036-9037(2006). - “Infrared Study of High Temperature Proton Conducting Sr(Zr0.95MIII0.05)O3-δ; Formation of MIIIO6-Cluster Depending on Dopant Species”
T. Omata, Y. Noguchi and S. Otsuka-Yao-Matsuo,
Solid State Ionics 176, 2941-2944 (2005). - “Synthesis of Novel Cation-Ordered Compounds with Fluorite Related Structure Prepared by Oxidation of Sn-Ta-O pyrochlore”
M. Kita, T. Omata, S. Otsuka-Yao-Matsuo and M. Katada
J. Solid State Chem. 178, 1254-1261(2005). - “Formation and Thermal Stability of Hydrate-Like Compounds of Ba2(In1-xMIIIx)2O5･nH2O (MIII=Ga, Sc, Lu and Y)”
T. Omata, M. Kita, Y. Goto, T. Okura and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 152, A1068-1072(2005). - “Infrared Study of High Temperature Proton Conducting Aliovalently Doped SrZrO3 and BaZrO3; Formation of YO6-Cluster in Y-Doped SrZrO3”
T. Omata, Y. Noguchi and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 152, E200-205 (2005). - “Electrical Conduction Properties of Sr-Doped LaPO4 and CePO4 under Oxidizing and Reducing Conditions”
N. Kitamura, K. Amezawa, Y. Tomii, T. Hanada, N. Yamamoto, T. Omata, and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 152, A658-663(2005). - “Synthesis of CdSe Quantum Dots by a Micro-Flow-Reactor and Their Optical Properties”
T. Omata, K. Nose, S. Otsuka-Yao-Matsuo, H. Nakamura and H. Maeda,
Jpn. J. Appl. Phys. 44, 452-456(2005). - “Characterization of Novel Cation Ordered Compounds with Fluorite and α-PbO2 Related Structures Prepared by Oxidation of Sn-Nb-O pyrochlore”
T. Omata, M. Kita, S. Otsuka-Yao-Matsuo and M. Katada,
J. Phys. Chem. Solids 66, 53-62 (2005). - “Effect of Ion Beam Energy and Polymer Weight on the Thickness of Nanowires Produced by Ion Bombardment of Polystyrene Thin Films”
S. Tsukuda, S. Seki, S. Tagawa, and M. Sugimoto,
Appl. Phys. Lett. 87, 233119-1-3 (2005). - “Effects of Backbone Configuration of Polysilanes on Nanoscale Structures Formed by Single-Particle Nanofabrication Technique”
S. Seki, S. Tsukuda, K. Maeda, S. Tagawa, H. Shibata, M. Sugimoto, K. Jinbo, I. Hashitomi, and A. Kohyama,
Macromolecules 38, 10164-10170(2005). - “Correlation between Edge Roughness of Nanostructures and Backbone Configuration of Polymer”
S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto,
J. Photopolym. Sci. Technol. 18, 449-450(2005). - “Formation of Nanowires Based on p-Conjugated Polymers by High-Energy Ion Beam Irradiation”
S. Tsukuda, S. Seki, M. Sugimoto, and S. Tagawa,
Jpn. J. Appl. Phys. 44, 5839-5842(2005). - “Proton Solubility for La2Zr2O7 with a Pyrochlore Structure Doped with a Series od Alkaline-earth Ions”
T. Omata, K. Ikeda, R. Tokashiki and S. Otsuka-Yao-Matsuo,
Solid State Ionics 167, 389-397(2004). - “Photocatalytic Behavior of Cerium Titanates, CeTiO4 and CeTi2O6 and Their Composite Powders with SrTiO3”
S. Otsuka-Yao-Matsuo, T. Omata, and M. Yoshimura,
J. Alloys and Compounds 376, 262-267(2004). - “O-H stretching Vibration of Proton Conducting Alkaline-Earth Zirconates”
T. Omata, M. Takagi and S. Otsuka-Yao-Matsuo,
Solid State Ionics 168, 99-109(2004). - “Synthesis of Novel Compounds with Cation Ordered Fluorite and α-PbO2 Related Structures by Oxidation of Sn2Nb2O7 Pyrochlore”
T. Omata, M. Kita, S. Otsuka-Yao-Matsuo and M. Katada,
J. Alloys and Compounds 370, 80-89(2004). - “Inhomogeneous Distribution of Crosslinks in Ion Tracks in Polystyrene and Polysilanes”
S. Seki, S. Tsukuda, K. Maeda, Y. Matsui, A. Saeki, and S. Tagawa,
Phys. Rev. B 70, 144203-1-8(2004). - “Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application”
S. Tsukuda, S. Seki, A. Saeki, T. Kozawa, S. Tagawa, M. Sugimoto, A. Idesaki, and S. Tanaka,
Jpn. J. Appl. Phys. 43, 3810-3814(2004). - “Fabrication of Nano-Wires Using High-Energy Ion Beams”
S. Tsukuda, S. Seki, S. Tagawa, M. Sugimoto, A. Idesaki, S. Tanaka, and A. Oshima,
J. Phys. Chem. B 108, 3407-3409(2004). - “Effect of Dopant Species on the Dissolving Site of the Protons in La2Zr2O7 Doped with Alkaline-earth Ions”
T. Omata, M. Takagi and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 150, E590-E594(2003). - “Thermodynamic Stability of Metastable Tetragonal t’-Ce0.5Zr0.5O2 Phase in the CeO2-ZrO2 system”
S. Otsuka-Yao-Matsuo, T. Yao and T. Omata,
High Temp. Mater. Proces. 22, 157-164(2003). - Photobleaching of Methylene Blue Aqueous Solution Sensitized by Composite Powders of Titanium Oxide with SrTiO3, BaTiO3 and CaTiO3”
S. Otsuka-Yao-Matsuo, T. Omata, S. Ueno and M. Kita,
Mater. Trans. 44, 2124-2129(2003). - “Photodegradation of Methylene Blue Aqueous Solution Sentitized By Pyrochlore-related κ-CeZrO4 Phase”
T. Omata, K. Ono and S. Otsuka-Yao-Matsuo,
Mater. Trans. 44, 1620-1623(2003). - “Photocatalytic behavior of titanium oxide-perovskite type Sr(Zr1-xYx)O3-δ composite particle”
T. Omata and S. Otsuka-Yao-Matsuo,
J. Photochem. Photobio. A: Chemistry, 156, 243-248(2003). - “Cross-linked Polymer Nano-Wires with Controlled Shape and Orientation by High Energy Single Ion Hitting”
S. Tsukuda, S. Seki, S. Tagawa, M. Sugimoto, A. Idesaki, and S. Tanaka,
J. Photopolym. Sci. Technol. 16, 433-434(2003). - “Nano-wire Formation and Selective Adhesion on Substrates by Single Ion Track Reaction in Polysilanes”
S. Seki, S. Tsukuda, Y. Yoshida, T. Kozawa, S. Tagawa, M. Sugimoto, and S. Tanaka,
Jpn. J. Appl. Phys. 42, 4159-4161(2003). - “Infrared Absorption Spectra of High Temperature Proton Conducting Ca2+-doped La2Zr2O7”
T. Omata and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 148, E475-482(2001). - “Electrical Conductivity of metastable κ-CeZrO4 Phase Possessing Ordered Arrangement of Ce and Zr Ions”
N. Izu, H. Kishimoto, T. Omata, T. Yao and S. Otsuka-Yao-Matsuo,
Sci. Tech. Adv. Mater. 2, 443-448(2001). - “Oxygen Release Behavior of Metastable Tetragonal t’meta-(Ce0.5Zr0.5)O2 Phases Prepared by reduction and Successive Oxidation of t’ Phase”
N. Izu, H. Kishimoto, T. Omata, K. Ono and S. Otsuka-Yao-Matsuo,
Sci. Tech. Adv. Mater. 2, 397-404(2001). - “Electrical Properties of Proton Conducting Ca2+-doped La2Zr2O7 with a pyrochlore-type Structure”
T. Omata and S. Otsuka-Yao-Matsuo,
J. Electrochem. Soc. 148, E252-261(2001). - “Crystal Structure of metastable κ-CeZrO4 phase possessing an ordered arrangement of Ce and Zr ions”
H. Kishimoto, T. Omata, S. Otsuka-Yao-Matsuo, K. Ueda, H. Hosono and H. Kawazoe,
J. Alloys and Compounds 312, 94-103(2000). - “Electron Trapping Center and SnO2-doping Mechanism of Indium Tin Oxide”
T. Omata, H. Fujiwara, S. Otsuka-Yao-Matsuo and N. Ono,
Applied Physics A 71(6), 609-614(2000). - “Electrical Conductivity of Novel Tetragonal t’meta-(Ce0.5Zr0.5)O2 Phase Prepared by Reduction and Successive Oxidation of t’ Phase”
N. Izu, H. Kishimoto, T. Omata and S. Otsuka-Yao-Matsuo,
J. Solid State Chem. 151, 253-259(2000). - “Vibrational spectroscopic and X-ray diffraction studies of cerium zirconium oxides with Ce/Zr composition ratio=1
prepared by reduction and successive oxidation of t’-(Ce0.5Zr0.5)O2 phase”
T. Omata, H. Kishimoto, S. Otsuka-Yao-Matsuo, N. Ohtori and N. Umesaki,
J. Solid State Chem. 147, 573-583(1999). - “Observation of electronic structure in conduction band of CaTiO3”
K. Ueda, H. Yanagi, R. Noshiro, H. Mizoguchi, T. Omata, N. Ueda, H. Hosono and H. Kawazoe,
J. Ceram. Soc. Jpn. 106(10), 964-967(1998). - “Oxygen release behavior of Ce(1-x)ZrxO2 powders and appearance of Ce(8-4y)Zr4yO(14-δ) solid solution in the ZrO2-CeO2-CeO1.5 system”
N. Izu, T. Omata and S. Otsuka-Yao-Matsuo,
J. Alloys and Compounds 270, 107-114(1998). - “Properties of transition metal oxides with layered perovskite structure”
M. Takemoto, T. Miyajima, K. Takayanagi, T. Ogawa, H. Ikawa and T. Omata,
Solid State Ionics 108, 255-260(1998). - “High efficiency-carrier-generation for the oxygen release reaction in indium tin oxide”
T. Omata, H. Fujiwara, S. Otsuka-Yao-Matsuo, N. Ono and H. Ikawa,
Jpn. J. Appl. Phys. Part 2 37(7B), 879-881 (1998). - “Oxygen release behavior of CeZrO4 powders and appearance of new compoundsκand t* “
S. Otsuka-Yao-Matsuo, T. Omata, N. Izu and H. Kishimoto,
J. Solid State Chem. 138, 47-54(1998). - “Thermodynamic behavior of various phases appearing in the CeZrO4-CeZrO3.5 system and the formation of metastable solid solutions”
S. Otsuka-Yao-Matsuo, N. Izu, T. Omata and K. Ikeda,
J. Electrochem. Soc. 145(4), 1406-1413(1998). - “In-situ observation of the electrical conductivity upon release and uptake of oxygen in indium tin oxide sinter”
T. Omata, H. Fujiwara, S. Otsuka-Matsuo-Yao and N. Ono,
Jpn. J. Appl. Phys. Part 1 37(3),868-871 (1998). - “DC electrorheology of fluid suspending barium titanate in the range of ferroelectric size effects”
H. Ikawa, T. Katou, M. Satou, T. Omata and T. Hayashi,
Ferroelectrics 203, 241-248(1997). - “Water and hydrogen evolution properties and protonic conducting behaviors of Ca2+-doped La2Zr2O7 with a pyrochlore structure”
T. Omata, K. Okuda, S. Tsugimoto and S. Otsuka-Matsuo-Yao,
Solid State Ionics 104, 249-258(1997). - “New mixed-valence oxides of bismuth: Bi1-xYxO1.5+δ(x=0.4)”
H.Mizoguchi, K.Ueda, H.Kawazoe, H.Hosono, T.Omata and S. Fujitsu,
J. Mater. Chem., 7(6), 943-946(1997). - “Features of valence band structure of TlAlF4”
H. Mizoguchi, T. Omata, H. Kawazoe, S. Fujitsu, H. Hosono and N. Ueda,
J. Phys.: Condens. Matter 8, 303-312(1996). - “Optical absorption spectra and the nature of conduction carriers of hole-doped Sr1+xLa1-xFeO4”
T. Omata, H. Ikawa, S. Fujitsu, H. Hosono, N. Ueda and H. Kawazoe,
Solid State Commun. 97(5), 411-415(1996). - “Electrical transport properties of hole-doped Sr1+xLa1-xCrO4+δ”
T. Omata, T. Kawano, H. Ikawa, T. Sasamoto, H. Hosono, H. Mizoguchi and H. Kawazoe,
J. Ceram. Soc. Jpn. 103(11), 1112-1116(1995). - “K2NiF4型La2-xSrxMnO4+δの合成と電気的性質”
小俣孝久, 星野進, 井川博行, 笹本忠,
J. Ceram. Soc. Jpn. 103(12), 1297-1301(1995). - “Generation of electron carriers in insulating thin film of MgIn2O4 spinel by Li+ implantation”
H. Kawazoe, N. Ueda, H. Un’no, T. Omata, H. Hosono and H. Tanoue,
J. Appl. Phys. 76, 7935-7941 (1994). - “Electronic structure of hole-doped Sr1+xLa1-xFeO4 studied by UPS and XAS”
T. Omata, K. Ueda, H. Hosono, T. Miyazaki, S. Hasegawa, N. Ueda and H. Kawazoe,
Phys. Rev. B 49, 10200-10205(1994). - “Electrical and magnetic properties of hole-doped Sr1+xLa1-xFeO4”
T. Omata, K. Ueda, H. Hosono, M. Katada, N. Ueda and H. Kawazoe,
Phys. Rev. B 49, 10194-10199 (1994). - “New ultraviolet-transparent electroconductive oxide, ZnGa2O4 spinel”
T. Omata, N. Ueda, K. Ueda and H. Kawazoe,
Appl. Phys. Lett. 64, 1077-1078(1994). - “New oxide phase Cd2(1-x)Y2xSb2O7 with a wide band gap and high electrical conductivity”
K. Yanagawa, Y. Ohki, N. Ueda, T. Omata, T. Hashimoto and H. Kawazoe,
Jpn. J. Appl. Phys. 33, L238-240(1994). - Preparation of Cd1-xYxSb2O6 thin film on glass substrate by radio frequency sputtering”
K. Yanagawa, Y. Ohki, T. Omata, H. Hosono, N. Ueda and H. Kawazoe,
Appl. Phys. Lett. 65, 406-408(1994). - “Preparation of oxygen excess SrLaFeO4+δ and its electrical and magnetic properties”
T. Omata, K. Ueda, N. Ueda, M. Katada, S. Fujitsu, T. Hashimoto and H. Kawazoe,
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