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Synthesis, structure and physical property of Ag_3AsS_3-Ag_3AsSe_3

Research Project

Project/Area Number 63540648
Research Category

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

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionKanazawa University (Faculty of Science)

Principal Investigator

MATSUMOTO Takeo  Kanazawa Univ., Dept.Science, Professor, 理学部, 教授 (20019467)

Co-Investigator(Kenkyū-buntansha) OKUNO Masayuki  Kanazawa Univ., Dept.Science, Assistant, 理学部, 助手 (40183032)
KIHARA Kuniaki  Kanazawa Univ., Dept.Science, Assoc.Prof., 理学部, 助教授 (70019503)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsProustite / Pyrargyrite / Solid solution / Local structure / EXAFS / Ionic conductivity / Glass structure / Ag_3AsS_3 / X線同経分布法
Research Abstract

Ag_3 AsS_3 (proustite) - Ag_3 SbS_3 (pyrargyrite) solid solution and Ag_3 AsSe_3, which was first synthesized in our Department,are isostructural, and Ag atoms in these end member crystals, show large anisotropic thermal vibrations. Recently Kihara and Matsumoto have refined the crystal structure of Ag_3 AsSe_3 using anharmonic thermal vibrations and suggested the ionic conductivity and this property has been confirmed by Yoshiasa. In this project, we continue to investigate these crystals and glass in detail, using x-ray diffraction method and EXAFS measurement. The main results are as follows.
1. Ag_3 (As,Sb)S_3 solid solution. Seven crystalline substances with different composition were prepared by silica-glass quenching method,and x-ray absorption spectra were collected for As and Sb K absorption edges and |F(r)|'s of k chi(k) for these EXAFS spectra were obtained. All prominent peaks corresponding to As-S and Sb-S are similar position for 7 samples with different height. This fact suggests AsS_3 and SbS_3 groups exist separately in this series. 2. Ag_3 As S_3 glass. The local structure of this glass has been investigated by EXAFS analysis. The local structure around As atom is very similar to that in the crystal, and this suggests AsS_3 groups exist in glass as in crystal.
The Ag-S distances in the glass are almost equal to that of crystal, but because of weak intensity and large Debye-Waller type factor, Ag atoms randomly distribute around AsS_3 groups, and this suggests that Ag atoms contribute to the ionic conduction.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Hideyuki SUGAYA et al.: "An EXAFS study of Ag_3SbS_3-Ag_3AsS_3 solid solution." Photon Factory Activity Report,1988,#6(National Laboratory for high energy physics KEK). 6. 43-43 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki OKUNO et al.: "An EXAFS study of Ag_3AsS_3 glass." Photon Factory Activity Report,1988,#6(National Laboratory for high energy physics KEK). 6. 44-44 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki OKUNO et al.: "The stru cture analysis of Ag_3AsS_3 glass by EXAFS measurement." Photon Factory Activity Report,1989,#7(National Laboratory for high energy physics KEK). 7. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideyuki SUGAYA,Masayuki OKUNO,and Takeo MATSUMOTO: "An EXAFS study of Ag_3AsS_3glass." Maybe submit to J.Non-Cryst. Solids.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideyuki SUGAYA et al.: "An EXAFS study of Ag_3SbS_3-Ag_3AsS_3 solid solution." Photon Factory Activity Report, 1988 #6, 43 (1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki OKUNO et al.: "An EXAFS study of Ag_3AsS_3 glass." Photon Factory Activity Report, 1988 #6, 44 (1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masayuki OKUNO et al.: "The structure analysis of Ag_3AsS_3 glass by EXAFS measurement. (to appear)" Photon Factory Activity Report, 1989 #7 (1989).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideyuki SUGAYA, Masayuki OKUNO and Takeo MATSUMOTO: "An EXAFS study of Ag_3AsS_3 glass. (In preparation)."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideyuki SUGAYA et al.: "An EXAFS study of Ag_3SbS_3 Ag_3AsS_3 solid solution." Photon Factory Activity Report.1988,#6(National Laboratory for High energy physics,KEK). 6. 43-43 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Masayuki OKUNO et al.: "An EXAFS study of Ag_3AsS_3 glass." Photon Factory Activity Report.1988,#6(National Laboratory for high energy physics,KEK). 6. 44-44 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Masayuki OKUNO et al.: "The structure analysis of Ag_3AsS_3 glass by EXAFS measurement." Photon Factory Activity Report.1999:#7(National Laboratory for high energy physics,KEK). 7. (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hideyuki SUGAYA,Masayuki OKUNO and Takeo MATSUMOTO: "An EXAFS study of Ag_3AsS_3 glass" (Maybe submit to J.Non-Cryst.Solids).

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Sugaya et al: Photon Factory Activity Report 1988/1989;Natinal Laboratory for High Energy Physics,KEK. 1988/89. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Okuno et al.: Photon Factory Activity Report 1988/1989;Natinal Laboratory for High Energy Physics,KEK. 1988/89. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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