Crystallization-induced short-range order changes in amorphous GeTe

A. V. Kolobov, P. Fons, J. Tominaga, A. L. Ankudinov, S. N. Yannopoulos, K. S. Andrikopoulos

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Abstract

By means of x-ray absorption fine structure and Raman scattering spectroscopies we demonstrate that the structure of amorphous GeTe is likely to be a mixture of 4(Ge):2(Te) and 3(Ge):3(Te)-coordinated structural units. Upon crystallization, a rhombohedral (distorted rocksalt) structure is established with about 10% of vacancies occurring on Ge sites. The vacancies are believed to play an important role in determining the ratio of 3(Ge):3(Te) and 4(Ge):2(Te) structural units.

Original languageEnglish
Pages (from-to)S5103-S5108
JournalJournal of Physics Condensed Matter
Volume16
Issue number44
DOIs
Publication statusPublished - 2004 Nov 10
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    Kolobov, A. V., Fons, P., Tominaga, J., Ankudinov, A. L., Yannopoulos, S. N., & Andrikopoulos, K. S. (2004). Crystallization-induced short-range order changes in amorphous GeTe. Journal of Physics Condensed Matter, 16(44), S5103-S5108. https://doi.org/10.1088/0953-8984/16/44/008