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Study on structural relaxation in silica glass

Research Project

Project/Area Number 09640408
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅰ(光物性・半導体・誘電体)
Research InstitutionToyota Technological Institute

Principal Investigator

IKUSHIMA Akira J.  Toyota Technological Institute, Granduate School of Engineering, professor, 工学研究科, 教授 (10029415)

Co-Investigator(Kenkyū-buntansha) SAITO Kazuya  Toyota Technological Institute, Granduate School of Engineering, lecturer, 工学研究科, 講師 (20278394)
FUJIWARA Takumi  Toyota Technological Institute, Granduate School of Engineering, associate profe, 工学研究科, 助教授 (10278393)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥3,500,000 (Direct Cost: ¥3,500,000)
Keywordsstructural relaxation / silica glass / glass transition / フォトニクス材料 / 光散乱
Research Abstract

Investigations of structural relaxation in silica glass are necessary for developing silica glasses with high performances such as ultralow-loss and UV-proof properties. Silica glass is also advantageous for studying on glass transition mechanism because of its simple structure. In this project we tried to measure various properties of silica glasses over a wide-temperature range including the glass transition temperature, and have elucidated structural relaxation processes and their impurity effects as follows :
(1)OH or Cl enhances the alpha-relaxation governed by viscous flow, and also generates a sub-relaxational process.
(2)he sub-relaxational process is local structural change caused by impurity diffusion.
(3)I restrains the alpha -relaxation, contrary to OH and Cl.
From these results, we have established controlling the structural relaxation by impurity doping, and developed the following high-functional silica glasses.
(1)Na-doped ultralow-loss glass
(2)l-doped ultra-heat-proof glass
(3)Ultra UV-proof glass created by OH doping, UV-laser irradiation, and thermal annealing

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] K.Saito: "“Structural Relaxation of the Frozen-in Density Fluctuations in Silica Glass"" Prog.Theor.Phys.Suppl.126. 277-280 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Reduction of Light-scattering Loss in Silica Glass by the Structural Relaxation of“Frozen-in"Density Fluctuations"" Apll.Phys.Lett.70. 3504-3506 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“A New Method of Developing Ultralow-loss Glasses"" J.Appl.Phys.81. 7129-7134 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Investigation of Ultimate Transparency in Silica Fiber"" Chemistry Today. 317. 31-36 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Investigation of the Origin ofthe Rayleigh Scattering in SiO_2 Glass"" J.Non-Cryst.Solids. 222. 329-334 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Light Scattering Studies on the Glass Transition and the Structure in Silica Glass"" Jpn.J.Appl.Phys.Suppl.37-1. 32-35 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Light Scattering Study of the Glass Transition in Silica, with Practical Implications"" J.Appl.Phys.84. 3107-3112 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Structural Relaxation enhanced by Cl ions in Silica Glass"" Appl.Phys.Lett.73. 1209-1211 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Development of a Wide-temperature Range VUV&UV Phospectrometer and Its Applications to Silica Glass"" J.Non-Cryst.Solids,. in print. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Structural Relaxation Enhanced by Impurities in Silica Glass"" AIP Conference Proceedings of Tohwa University International Symposium on Slow Dynamics in Comples Sytems, Fukuoka. in print. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 斎藤和也: "非晶質SiO2材料応用ハンドブック(仮称) 高温物性の章" リアライズ社 発刊予定, (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito and A.J.Ikushima: ""Structural Relaxation of the Frozen-in Density Fluctuations in Silica Glass"" Prog.Theor.Phys.Suppl.126. 277-280 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito and A.J.Ikushima: ""Reduction of Light-Scattering Loss in Silica Glass by the Structural Relaxation of "Frozen-in" Density Fluctuations"" Appl.Phys.Lett.70. 3504-3506 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito, A.J.Ikushima, T.Ito, and A.Itoh: ""A New Method of Developing Ultralow-loss Glasses"" J.Appl.Phys.81. 7129-7134 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito, H.Kakiuchida, and A.J.Ikushima: ""Investigation of the Origin of the Rayleigh Scattering in SiO_2 Glass"" J.Non-Cryst.Solids. 222. 329-334 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito, H.Kakiuchida, and A.J.Ikushima: ""Light Scattering Studies on the Glass Transition and the Structure in Silica Glass"" Jpn.J.Appl.Phys.Suppl.37-1. 32-35 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito, H.Kakiuchida, and A.J.Ikushima: ""Light Scattering Study of the Glass Transition in Silica, with Practical Implications"" J.Appl.Phys.84. 3107-3112 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito and A.J.Ikushima: ""Structural Relaxation enhanced by Cl ions in Silica Glass"" Appl.Phys.Lett.73. 1209-1211 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito and A.J.Ikushima: ""Development of a Wide-temperature Range VUV&UV Phospectrometer and Its Applications to Silica Glass"" J.Non-Cryst.Solids. (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito and A.J.Ikushima: ""Structural Relaxation Enhanced by Impurities in Silica Glass"" AIP Conference Proceedings of Tohwa University International Symposium on "Slow Dynamics in Complex Systems". CP469. 507-512 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Saito: "“Structural Relaxation of the Frozen-in Density Fluctuations in Silica Glass"" Prog.Theor.Phys.Suppl.126. 277-280 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Reduction of Light-scattering Loss in Silica Glass by the Structural Relaxation of “Frozen-in" Density Fluctuations"" Appl.Phys.Lett.70. 3504-3506 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“A New Method of Developing Ultralow-loss Glasses"" J.Appl.Phys.81. 7129-7134 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Investigation of Ultimate Transparency in Silica Fiber"" Chemistry Today. 317. 31-36 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Investigation of the Origin of the Rayleigh Scattering in SiO_2 Glass"" J.Non-Cryst.Solids. 222. 329-334 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Light Scattering Studies on the Glass Transition and the Structure in Silica Glass"" Jpn.J.Appl.Phys.Suppl.37-1. 32-35 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Light Scattering Study of the Glass Transition in Silica, with Practical Implications"" J.Appl.Phys.84. 3107-3112 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Structural Relaxation enhanced by Cl ions in Silica Glass"." Appl.Phys.Lett.73. 1209-1211 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Development of a Wide-temperature Range VUV & UV Phospectrometer and Its Applications to Silica Glass"" J.Non-Cryst.Solids,. in print.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito: "“Structural Relaxation Enhanced by Impurities in Silica Glass"" AIP Conference Proceedings of Tohwa University International Symposium on Slow Dynamics in Comples Systems, Fukuoka. in print.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 斉藤和也: "非晶質SiO_2材料応用ハンドブック(仮称) 高温物性の章" リアライズ社(発刊予定), (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Saito and A.J.Ikushima: ""Structural Relaxation of the Frozen-in Density Fluctuations in Silica Glass"" Prog.Theor.Phys.126. 277-280 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Saito and A.J.Ikushima: ""Reduction of Light-scattering Loss in Silica Glass by the Structural Relaxation of "Frozen-in" Density Fluctuations"" Appl.Phys.Lett.70・26. 3504-3506 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Saito and A.J.Ikushima: ""A New Method of Developing Ultralow-loss Glasses"" J.Appl.Phys.81・11. 7129-7134 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Saito, H.Kakiuchida,and A.J.Ikushima: ""Investigation of the Origin of the Rayleigh Scattering in SiO_2 Glass"" J.Non-Cryst.Solids. 222. 329-334 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Saito, H.Kakiuchida,and A.J.Ikushima: ""Light Scattering Studies on the Glass Transition and the Structure in Silica Glass"" Jpn.J.Appl.Phys.(in press).

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2020-05-15  

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