• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Structural studies of ceramic small crystals by synchrotron X-ray diffraction

Research Project

Project/Area Number 11450245
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic materials/Physical properties
Research InstitutionTokyo Institute of Technology

Principal Investigator

ISHIZAWA Nobuo  Structures Laboratory, Tokyo Institute of Technology, Associate professor, 応用セラミックス研究所, 助教授 (90151365)

Co-Investigator(Kenkyū-buntansha) MARUMO Fumiyuki  Nihon University, Professor, 文理学部, 教授 (10013492)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥12,500,000 (Direct Cost: ¥12,500,000)
Keywordssmall single crystal / synchrotron X-ray diffraction / imaging plate diffractometer / electron density distribution / layered perovskite / crystal chemistry / superstructure / 放射光回折 / ニオブ酸リチウム / 層状ペロブスカイト / 電子密度分布解析
Research Abstract

The present study has been carried out with the objective to determine accurate and precise structures of functionally important crystals in various ambient circumstances, e.g., various temperatures, pressures, magnetic fields, electrostatic fields, and humidity. Such analyzes using the single crystal diffraction technique have so far been suffered from the extinction effect which often reduces the incident intensity expected from the kinematical theory. The present study seems to have succeeded in eliminating the problem from practical point of view, by the use of small crystal of about 10 micrometer in size and by the use of the synchrotron source with high flux. The results obtained are determination of incommensurately modulated structures in various inorganic solid solution, investigation of the superstructures of layered perovskites, LiCa2Nb3O10, LiCa2Ta3O10, RbCa2Nb3O10, RbCa2Ta3O10, NaCa2Nb3O10, NaCa2Ta3O10, HCa2Nb3O10, HCa2Ta3O10, SrMgF4, BaMgF4 and so forth. All these studies were done at the Photon Factory, High-Energy Physics Laboratory, Japan, and at the principal investigator's laboratory using the imaging-plate three-circle diffractometer which has been recently developed for the rapid data collection at ambient conditions. The principal investigator now bears in mind a thought that this project has successfully conducted by the group members and the results have contributed to the scientific communities involved in the materials science and crystallography to a great extent.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] B.E.Etschmann: "A synchrotron X-ray Study of the Electron Density in Er_3Al_5O_<12> and Yb_3Al_5O_<12> Gar-nets"Acta Crystallographica. B57. 136-141 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] B.E.Etschmann: "A synchrotron XRD study of a small congruent LiNbO_3 crystal : a compatible approach to powder diffraction"Powder Diffraction. 16[2]. 81-85 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Tabira: "Annular dynamical disorder of the rare earth ions in a La_2zr_2O_7pyrochlore via single crystal synchrotoron X-ray diffraction"Zeitschrift fur Kristallographie. 216[2]. 92-98 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Barbara Etschmann: "A Synchrotron X-ray Diffraction Analysis of Near-Stoichiometric LiNbO3"Zeitschrift fur Kristallographie. 216[8]. 455-461 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta MATSUSHIMA: "Structural Study of PbZn_<1/3>Nb_<2/3>O_3 by Single Crystal X-ray Diffraction and FXAFS"J.Ceram.Soc.Japan. 108[7]. 617-622 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Kuze: "Charge Density Study of MnS_2 by Synchrotron X-ray Diffraction and DVXα method-"Bulletin of the Society for Discrete Variational Xα. 13[1]. 46-50 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] B. E. Etschmann et al.: "A synchrotron X-ray Study of the Electron Density in Er_3Al_5O_<12> and Yb_3Al_5O_<12> Garnets"Acta Crystallographica. B57. 136-141 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] B. E. Etschmann et al.: "A synchrotron XRD study of a small congruent LiNbO_3 crystal : a compatible approach to powder diffraction"Powder Diffraction. 16[2]. 81-85 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Tabira et al.: "Annular dynamical disorder of the rare earth ions in a La_2Zr_2O_7 pyrochlore via single crystal synchrotron X-ray diffraction"Zeitschrift fur Kristallographie. 216[2]. 92-98 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Barbara Etschmann et al.: "A Synchrotron X-ray Diffraction Analysis of Near-Stoichiometric LiNbO3"Zeitschrift fur Kristallographie. 216[8]. 455-461 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta MATSUSHIMA et al.: "Structural Study of PbZn_<1/3>Nb_<2/3>O_3 by Single Crystal X-ray Diffraction and EXAFS"J. Ceram. Soc. Japan. 108[7]. 617-622 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Kuze et al.: "Charge Density Study of MnS_2 by Synchrotron X-ray Diffraction and DVXa method"Bulletin of the Society for Discrete Variational Xα. 13[1]. 46-50 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] B.E.Etschmann: "A synchrotron X-ray Study of the Electron Density in Er_3Al_5O_<12> and Yb_3Al_5O_<12> Garnets"Acta Crystallographica. B57. 136-141 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] B.E.Etschmann: "A synchrotron XRD study of a small congruent LiNbO_3 crystal : a compatible approach to power diffraction"Powder Diffraction. 16[2]. 81-85 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Tabira: "Annular dynamical disorder of the rare earth ions in a La_2Zr_2O_7 pyrochlore via single crystal synchrotron X-ray diffraction"Zertschrift fur Kristallographie. 216[2]. 92-98 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Barbara Etschmann: "A Synchrotron X-ray Diffraction Analysis of Near-Stoichiometric LiNbO3"Zertschrift fur Kristallographie. 216[8]. 455-461 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Ishizawa: "Improvement of the Precision and Accuracy of Electron Density Analysis Using Synchrotron Radiation"Proceedings of the International Workshop on High-Precision.High-Resolution Analysis Methods of Electronic States of Solids. (印刷中). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] F.Marumo: "Electron Density Distributions in Fayalite, Fe_2SiO_4"Proceedings of the International Workshop on High-Precision.High-Resolution Analysis Methods of Electronic States of Solids. (印刷中). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.KITAHARA: "CLIDE TWINNING OF CHALCOPYRITE-TYPE AgGaS_2 : MORPHOLOGY AND FORMATION MECHANISM"Advances in X-ray Analysis. 43(印刷中). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yuta MATSUSHIMA: "Structural Study of PbZn_<1/3>Nb_<2/3>O_3 by Single Crystal X-ray Diffraction and EXAFS"J.Ceram.Soc.Japan. 108[7]. 617-622 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.Kuze: "Charge Density Study of MnS_2 by Synchrotron X-ray Diffraction and DVX α Method"Bulletin of the Society for Discrete Variational X α. 13[1]. 46-50 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Ishizawa: "Synchrotron X-ray Imaging of the Charge Density in La_<1.88>Sr_<0.12>CuO_4 and Its Evaluation by Molecular Orbital Calculations"Physica C. 338. 166-169 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Kitahara Eba: "Synchrotron x-ray study of the monoclininc high-pressure strcuture of AgGaS_2"Physical Review B. 61〔5〕. 3310-3316 (2000)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi