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

  • 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

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

    Choi Minuk, Tomokatsu Hayakawa

    Materials Research Bulletin ( Elsevier )  113   84 - 89   2019.05  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Structural investigation of new tellurite glasses belonging to the TeO2-NbO2.5-WO3 system, and a study of their linear and nonlinear optical properties

    M.R.Zaki, D.Hamani, M.Dutreih-Colas, J.-R.Duclère, J.de Clermont-Gallerande, T.Hayakawa, O.Masson, P.Thomas

    J.Non-Cryst.Solids   512 ( 5 ) 161 - 173   2019.05  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Quantum cutting properties of Tb3+/Yb3+ co-doped ZrO2-SiO2 nano-crystalized glasses synthesized via a sol-gel route

    M.Isogai, T.Hayakawa, J.-R.Duclère, P.Thomas

    J. Alloys Compds.   781 ( 4 ) 315 - 320   2019.04  [Refereed]

    Research paper (scientific journal)   Single Author

  • Devitrification behavior of sol-gel derived ZrO2-SiO2 rare-earth doped glasses: correlation between structural and optical properties

    M.Isogai, A.Beber, M.R.Cicconi, T.Hayakawa, D.de Ligny,

    CeramicsCeramics 1, 274-286 (2018).   1   274 - 286   2018.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Novel method to Control Initial Crystallization of Eu3+ Doped ZrO2 Nanophosphors Derived from a Sol-Gel Route Based on HNO3 and their Site-selective Photoluminescence

    R.Ikeshita, T.Hayakawa*, M.Isogai, Y.Iwamoto, J.-R. Duclére, F.Rémondière, P.Thomas, A.Lecomte

    J.Ceram.Soc.Japan   126 ( 7 ) 551 - 556   2018.07  [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

  • 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

  • Discussion for improving photocatalytic properties of hexagonal platelet CuGaO2/ZnO hybrids

    M.-U.Choi, T.Hayakawa,

    JGGE Kick-off symposium in NITech  (Nagoya)  2019.10  -  2019.10  NITech FRIMS

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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