HAYAKAWA Tomokatsu

写真a

Affiliation Department etc.

Department of Life Science and Applied Chemistry
Department of Life Science and Applied Chemistry

Title

Professor

Graduating School

  •  
    -
    1992.03

    Saitama University   Faculty of Engineering   Graduated

Graduate School

  •  
    -
    1997.03

    Saitama University  Graduate School, Division of Science and Engineering  Doctor's Course  Completed

Degree

  • Saitama University -  Master (Engineering)

  • Saitama University -  Doctor (Arts)

External Career

  • 2012.06
    -
    2016.06

      Professor  

Field of expertise (Grants-in-aid for Scientific Research classification)

  • Condensed matter physics I

  • Functional solid state chemistry

  • Inorganic industrial materials

 

Papers

  • Novel findings on optical properties of Mn4+-doped (Rb,K)2Ge4O9 phosphors

    R.Oka*, D.Nishi, T.Hayakawa

    Phys.Status Solidi (b)     2022.02  [Refereed]  [Invited]

    Research paper (scientific journal)   Multiple Authorship

  • Simple method to estimate fractional numbers of Eu3+ ions in different phases in highly luminescent ZrO2-SiO2 nanocomposites

    T.Hayakawa*, R.Ikeshita, J.-R.Duclere, A.Leconte,

    Phys.Status Solidi (b)     2022.02  [Refereed]  [Invited]

    Research paper (scientific journal)   Multiple Authorship

  • Nucleation mechanisms in a SiO2-Li2O-P2O5-ZrO2 biomedical glass-ceramic: Insights on crystallisation, residual glasses and Zr4+ structural environment

    M.R.Cicconi*, R.Belli, M.Brehl, J.Lubauer, T.Hayakawa, K.Kimura, T.Hirota, K.Usui, S.Kohara, Y.Onodera, U.Lohbauer, K.Hayashi, D.de Ligny

    J.Eur.Ceram.Soc.   42   1762 - 1775   2021.12  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Influence of Nd3+ modifying on 80TeO2-xZnO-(20-x)Na2O ternary glass system

    Jonathan de Clermont-Gallerande, Taniguchi Daiki, Maggy Colas, Philippe Thomas, Tomokatsu Hayakawa

    APL Mater. ( AIP publishing )    2021.12  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Thermal evolution to glass-ceramics bearing calcium tungstate crystals in borate glasses doped with photoluminescent Eu3+ ions

    T.Otsuka, M.Brehl, M.R.Ciconni, D.de Ligny, T.Hayakawa

    Materials   14   952   2021.04  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Estimation of delafossite p-type CuGaO2/ZnO hybrids as semiconductor photocatalyst by controlling particle size

    M.Choi, S.Yagi, T.Ohta, K.Kido, T.Hayakawa

    J.Phys.Chem.Solids   In press   109845   2020.11  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • New understanding of TeO2-ZnO-Na2O ternary glass system

    J.de Clermont-Gallerande, S.Saito, M.Colas, P.Thomas, T.Hayakawa

    J.Alloys Compds.   854   157072   2020.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Correlation between mechanical and structural properties as a function of temperature within the TeO2-TiO2-ZnO ternary system

    J.de Clermont-Gallerande, M.Dutreilh -Colas, R.Célarié, M.Berger, D.deLigny, T.Hayakawa, P.Thomas

    J.Non-Cryst.Solids   528 ( 1 ) 119716   2020.01  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Optical properties of Nd3+-doped TeO2-TiO2-ZnO glasses with lower hydroxyl content

    J.de Clermont-Gallerande, S.Saito, T.Hayakawa, M.Colas, J.-R.Duclère, P.Thomas

    J.Non-Cryst.Solids   528 ( 1 ) 119678   2020.01  [Refereed]  [Invited]

    Research paper (scientific journal)   Multiple Authorship

  • Measurement of the third order nonlinear susceptibility ofparatellurite single crystal using multiplex CARS

    Z. Rajaofara, P. Leproux, E. Capitaine, H. Kano, T. Hayakawa, P. Thomas, J.-R.Duclère, V. Couderc

    AIP Advances   9   105301   2019.09  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

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Books

  • Electronic 4f-5d structure and persistent spectral hole burning of divalent Sm ions in sol-gel derived Al2O3-SiO2 glasses

    T.Hayakawa, and M.Nogami (Part: Multiple Authorship )

    Photonics Based on Wavelength Integration and Manipulation  2005.03

Review Papers

  • C-axis orientation and optical transmission properties of translucent polycrystalline alumina ceramics

    T.Hayakawa, S.Hayashi, S.Miyazawa, T.Ohashi, K.Watanabe

    Light Sources 2012 ( Light Sources 2012 )    131 - 132   2012.09

    Introduction and explanation (international conference proceedings)   Multiple Authorship

Presentations

  • テルライトガラスに関するボソンピーク及び構造変化との相関関係の研究

    Jonathan de Clermont-Gallerande, Taniguchi Daiki, Tomokatsu Hayakawa

    応用物理学会秋季講演会  2021.09  -  2021.09  応用物理学会

  • Site-selective optical properties of double perovskite-type phosphors Sr2CaWO6:x(Eu3+, Na+)

    T.Otsuka, T.Hayakawa,

    44th International conference and expo on advanced ceramics and composites (ICACC2020)  (on web, Daytona Beach, Florida)  2021.01  -  2021.01  The American Ceramic Society

  • Photoluminescence properties and quantum efficiency of Nd3+-doped TeO2-K2O-Ga2O3 glasses prepared with various crucibles

    N.Hosokawa, T.Hayakawa, P.Thomas, M.Colas

    Glass Meeting 2020  (on web, Tokyo)  2020.12  -  2020.12  The Ceramics Society of Japan

  • XAFS Investigation of Third-order Nonlinear Optical TeO2-Ag2O Glasses Controlled in Optical Bandgap

    T.Hayakawa, K.Kato, K.Muramatsu, Y.Kasuya, K.Yamamoto, K.Hayashi, P.Thomas,

    Glass Meeting 2020  (on web, Tokyo)  2020.12  -  2020.12  The Ceramics Society of Japan

  • Structural, mechanical and optical properties of the TeO2-ZnO-Na2O ternary glass system

    J. de Clermont-Gallerande, S.Saito, M.Colas, P.Thomas, T.Hayakawa

    Glass Meeting 2020  (on web, Tokyo)  2020.12  -  2020.12  The Ceramics Society of Japan

  • Optical properties and Rietveld refinement of Ca3WO6:Eu3+ phosphors

    Takahito Otsuka, Tomokatsu Hayakawa

    Materials Research Meeting 2019 (MRM2019),  (Yokohama)  2019.12  -  2019.12  MRS-J

  • Nonlinear optical properties and XAFS investigation of Ag2O-TeO2 glasses

    T. Hayakawa1, K. Kato, K. Muramatsu, K. Hayashi, K. Yamamoto, J. -R. Duclère, P.Thomas

    14th International Conference on the Structure of Non-Crystalline Materials (NCM14),   (Kobe)  2019.11  -  2019.11 

  • Synthesis and optical properties of TeO2-Ag2O-Bi2O3 glasses

    K. Kato, T. Hayakawa, J.-R. Duclère, P. Thomas

    14th International Conference on the Structure of Non-Crystalline Materials (NCM14),   (Kobe)  2019.11  -  2019.11 

  • Formation mechanism of hexagonal platelet delafossite CuGaO2 by hydrothermal synthesis

    N. Hayashi, M.U. Choi, T. Hayakawa

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13),  (Okinawa)  2019.10  -  2019.11  Ceramic. Society of Japan

  • Hydrothermal synthesis and photocatalytic properties of CuGaO2 and CuGaO2/ZnO hybrids

    M.U. Choi, S. Yagi, Y. Ohta, K. Kido, T. Hayakawa

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13),  (Okinawa)  2019.10  -  2019.11  Ceramic. Society of Japan

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Other research activities

  • Advances in Ceramic Science and Technology 2012

    Fieldwork  2012.03  -  2012.11

Academic Awards Received

  • Young Scientist Award of 2002 spring meeting in Japanese Society of Applied Physics

    2002.03.25    

    Winner: Tomokatsu Hayakawa