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Bonding State of Halide ions and Properties of Oxyhaloborate, Silicate and Tellurite Glasses

Research Project

Project/Area Number 62550567
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionOKAYAMA UNIVERSITY

Principal Investigator

OSAKA Akiyoshi  Dept. Appl. Chem., Fac. Eng., Okayama University, 工学部, 助教授 (20033409)

Co-Investigator(Kenkyū-buntansha) ODA Kiichi  Dept. Appl. Chem., Fac. Eng., Okayama University, 工学部, 助手 (50033410)
TAKADA Jun  Dept. Appl. Chem., Fac. Eng., Okayama University, 工学部, 助教授 (60093259)
MIURA Yoshinari  Dept. Appl. Chem., Fac. Eng., Okayama University, 工学部, 教授 (80032952)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsHalide ions / Bonding state / Electrical conductivity / Borate / Silicate / Tellurite / Glass / X-Ray photoelectron spectrum / Raman spectrum / 構造 / 鉛ホウ酸塩 / 鉛テルル酸塩 / X線光量電子分光 / 硫酸イオン
Research Abstract

The bonding state of the halide ions and electrical conduction mechanism have been systematically discussed on lead oxyhalide glasses.
1. Structure and conductivity for lead halosilicate glasses An analysis of a 900cm^<-1> raman band indicated that the glasses involve not only a dimeric silicate anion Si_2O_7^<6-> as the major silicate unit but free halide ions surrounded only by the lead ions. The conductivity data support this structure model. An Anderson-Stuart analysis on the activation energy for conduction has indicated that the bonding interaction is a predominate factor for fluoride ion mobility while a network-expanding energy is predominant for chloride ion migration.
2. Bonding state of halide ions in haloborate glasses and electrical conduction X-ray photoelectron spectra of Fls core for the fluoroborate glasses have indicated the presence of fluorine atoms bonded to the boron atoms (F-B) as well as free F ions bonded only to lead ions (Pb..F). The increase in conductivity is explained by the increase in F atoms of F..Pb state. Raman spectra for the chloroborate glasses have indicated the absence of chlorine atoms bonded to B while their larger size provides smaller conductivity. Aluminum atoms take 6-fold coordination state and suppress the mobility of the free f ions.
3. Glass formation and properties of lead halotellurite glasses A narrow glass formation composition rage for the fluorotellurite glasses is attributed to efficient atomic packing which is attained by bridging activity of all F atoms forming Te-F-Te bonds. The conductivity for the f glasses is accordingly independent of the F content. The bridging chlorine atoms contribute the conduction but not the terminal ones in the Cl glasses. Raman spectra have indicated the variation of Te units from trigonal bipyramid Te(O,Cl)_4 to trigonal pyramid Te(O,Cl)_3.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Akiyoshi OSAKA: Journal of Non-Crystalline Solids. 105. 63-68 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] WANG Yuhu: Journal of the American Ceramic Society. 71. 864-868 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] WANG Yuhu: Journal of Materials Sdience Letters. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA: 日本セラミックス協会学術論文誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA: Journal of Non-Crystalline Solids.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA: "Packing of Atoms in Lead Halosilicate Glasses of Low Silica Content" Journal of Non-Crystalline Solids. 105. 63-68 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] WANG Yuhu: "Anionic Conduction in Lead Halosilicate Glasses" Journal of the American Ceramic Society. 71. 864-868 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] WANG Yuhu: "X-Ray Photoelectron Spectroscopic Study of Lead Fluoroborate Glasses" Journal of Materials Science Letters. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA: "Constitution and Electrical Conductivity of Lead Haloborate Glasses" Journal of the Ceramic Society of Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA: "Glass Formation and Electrical Conductivity of Lead Halotellurite Glasses" Journal of Non-Crystalline Solids.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Akiyoshi OSAKA.: Journal of Non-Crystalline Silids. 105. 63-68 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] WANG Yuhu.: Journal of the American Ceramic Society. 71. 864-868 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] WANG Yuhu.: Journal of Materials Science Letters. (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yoshinari Miura: Journal of Non-Crystalline Solids,.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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