Pressure-induced amorphization of quasibinary GeTe- Sb2 Te3: The role of vacancies

A. V. Kolobov, J. Haines, A. Pradel, M. Ribes, P. Fons, J. Tominaga, C. Steimer, G. Aquilanti, S. Pascarelli

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34 Citations (Scopus)


The authors demonstrate that the cubic phase of quasibinary GeTe- Sb2 Te3 alloys (GST), the material of choice in phase-change optical recording (such as digital versatile disk-random access memory) can be rendered amorphous by the application of hydrostatic pressure. The amorphization pressure depends on the GST composition. The pressure-induced amorphous phase possesses a local structure around Ge atoms similar to that of laser-amorphized GST. They argue that vacancies are crucial for the pressure-induced amorphization.

Original languageEnglish
Article number021911
JournalApplied Physics Letters
Issue number2
Publication statusPublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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