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Characterization of Surface Defect Structures

Research Project

Project/Area Number 02650537
Research Category

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

Allocation TypeSingle-year Grants
Research Field 工業分析化学
Research InstitutionInstitute of Industrial Science, University of Tokyo

Principal Investigator

OWARI Masanori  Institute of Industrial Science, Univesity of Tokyo, Lecturer, 生産技術研究所, 講師 (70160950)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1991: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1990: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsCalcium fluoride / Electron bombardment / Surface defect / X-ray photoelectron spectroscopy / X-ray photoelectron diffraction / Chemical-state-discriminated XPED / Surface structural analysis / Epitaxial growth / X線光電子回析法
Research Abstract

Calcium fluoride(fluorite), which is thermally stable and electrically insulating., is well known to desorb florine atoms as a result of electron bombardment in ultrahigh vacuum environment. The purpose of this research is to clarify the structure of surface defects created by electron bombardment on a calcium fluoride crystal.
After electron bombardment on a calcium fluoride crystal under vacuum of 10^<-8> Torr with 90% of H_2O, the surface defects immediately reacted with residual H_20 to yield calcium oxide phase. Chemicalstate-discriminated X-rgy photoelectron diffraction measurements showed that the calcium oxide phase was in epitaxial relationship with the substrate, in which the 111 axis was common between the substrate and. the overlayer, and the orientation-was 180゚ rotated with each other.
After electron bombardment under 10^<-9> Torr, surface defects were relatively stable. X-ray photoelectron spectroscopic measurements showed that fluorine atoms in two or three atomic layers from the 2 surface decreased in number by electron bombardment of about 1 mC/cm^2. Intensity of a specific peak at definite angle in an X-ray photoelectron diffraction pattern for Fls decreased after electron bombardment. In order to relate the change in an X-ray photoelectron diffraction pattern with surface defect structure, theoretical calculation based on single scattering scheme was performed. Experimental results were best interpreted by the model in which a part of fluorine atoms in the third atomic layer selectively desorbed.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] C.Akita,T.Tomioka,M.Owari,A.Mizuike and Y.Nihei: "A Chemical-State-Discriminated XPED Study on Srructure of Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2(111)" Japanese Journal of Applied Physics. 29. 2106-2110 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C.Akita,T.Tomioka,M.Owari,A.Mizuike and Y.Nihei: "Structural Analysis of a Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2(111)by Means of Chemical-State Disriminated XPED" The Structure of Surfaces III,edited by S.Y.Tong,M.A.Van Hove,K.Takayanagi and X.D.Xie,Springer Series in Surface Sciences,vol.24,Springer-Verlag Berlin,Heidelbera. 676-680 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Ichinohe,F.Inoue,M.Owari,A.Mizuike and Y.Nihei: "A Chemical-State-Discriminated XPED Study on Structure of CaO Formed by Electron Bombardment of CaF_2(111)" Analytical Sciences. 7.Suppl.(1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C. Akita, T. Tomioka, M. Owari, A. Mizuike and Y. Nihei: "A Chemical-State-Discriminated XPED Study on Structure of Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2 (111)" Jpn. J. Appl. Phys.29. 2106-2110 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C. Akita, T. Tomioka, M. Owari, A. Mizuike and Y. Nihei: "Structural Analysis of a Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2 (111) by Means of chemical-State Discriminated XPED" The Structure of Surfaces III. Springer Series in Surface Sciences, Vol. 24, Springer-Verlag Berlin, Heidelberg. 676-680 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Ichinohe, F. Inoue, M. Owari, A. Mizuike and Y. Nihei: "A Chemical-State-Discriminated XPED Study on Structure of CaO Formed by Electron Bombardment on CaF_2 (111)" Anal. Sci. 7 Suppl. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Ichinohe,F.Inoue,M.Owari,A.Mizuike and Y.Nihei: "A ChemicalーStateーDiscriminated XPEd Study on Structure of CaO Formed by Electron Bombardment on CaF_2(III)" Analytical Sciences. 7.Suppl.(1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] edited by S.Y.Tong,M.A.Van Hove,K.Takayanagi and X.D.Xie(ed.),C.Akita,T.Tomioka,M.Owari,A.Mizuike and Y.Nihei: "Structural Analysis of a Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2(III)by Means of ChemicalーState Discriminated XPED" The Structure of Surfaces IV,Springer Series in Surface Sciences,(SpringerーVerlag Berlin,Heidelberg). Vol.24. 676-680 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] C.Akita,T.Tomioka,M.Owari,A.Mizuike,Y.Nihei: "A ChemicalーStateーDiscriminated XPED Study on Structure of Thin CaO Layer Formed by Electron Bombardment Heating on CaF_2(III)" Japanese Journal of Applied Physics. 29. 2106-2110 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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