Structural Study on Crystallization of a-Ge Using Exafs


Extended x-ray absorption fine structure (EXAFS) measurements were made on a-Ge and a-Ge:H films which were prepared by sputtering and were annealed at temperatures between 300 and 450° C.The first nearest neighbor distance and the Debye-valler factor were investigated. These values decrease rapidly on the crystallization of the samples. The relationship between them was analyzed in respect of tvo-body potential. The potential of amorphous state is considered to be affected by unharmonic term.

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  1. 1.

    S.C. Agarwal, Phys. Rev. B7, 685 (1973).

    CAS  Article  Google Scholar 

  2. 2.

    S.J. Hudgens, Phys. Rev. B7, 2481 (1973).

    Article  Google Scholar 

  3. 3.

    P. Germain, K. Zellama, S. Squelard, J.C. Bourgoin, and A. Cheorghin, J. Appl. Phys. 50, 6986 (1979).

    CAS  Article  Google Scholar 

  4. 4.

    J. Gonzalez-Hernandez and R. Tsu, Appl. Phys. Lett. 42, 90 (1983).

    CAS  Article  Google Scholar 

  5. 5.

    T. Okada, H. Wakayama, H. Kasahara, and Y. Yamamoto, J. Phys. Soc. Jpn. 55, 1415 (1986).

    CAS  Article  Google Scholar 

  6. 6.

    F. Evangelisti, M.G. Proietti, A. Balzarotti, F. Commin, L. Incoccia, and S. Mobilio, Solid State Commmun. 37, 413 (1981).

    CAS  Article  Google Scholar 

  7. 7.

    E.A. Stern, C.E. Bouldin, B. von Roedern, and J. Azoulay, Phys. Rev. B27, 6557 (1983).

    CAS  Article  Google Scholar 

  8. 8.

    M.A. Paesler, D.E. Sayers, R. Tsu, and J. Gonzalez-Hernandez, Phys. Rev. B28, 4550 (1983).

    CAS  Article  Google Scholar 

  9. 9.

    M. Wakagi, M. Chigasaki, and M. Nomura, J. Phys. Soc. Jpn. 56, 1765 (1987).

    CAS  Article  Google Scholar 

  10. 10.

    C.J. Fang, K.J. Gruntz, L. Ley, and M. Cardona, J. Non-Cryst. Solids 35–36, 255 (1980).

    Article  Google Scholar 

  11. 11.

    P.Eisenberger and G.S. Brown, Solid State Commun. 29, 481 (1979).

    CAS  Article  Google Scholar 

  12. 12.

    C.E. Bouldin, E.A. Stern, B. von Roedern, and J. Azoulay, Phys. Rev. B30, 4462 (1984).

    CAS  Article  Google Scholar 

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Correspondence to Masatoshi Wakagi.

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Wakagi, M., Hirano, T., Hanazono, M. et al. Structural Study on Crystallization of a-Ge Using Exafs. MRS Online Proceedings Library 118, 91 (1988).

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