Pressure-induced amorphization of quasibinary GeTe-Sb2Te3:: The role of vacancies

被引：34
作者：
Kolobov, A. V.
Haines, J.
Pradel, A.
Ribes, M.
Fons, P.
Tominaga, J.
Steimer, C.
Aquilanti, G.
Pascarelli, S.
机构：
[1] Univ Montpellier 2, CNRS, UMR 5253, Inst Charles Gerhardt, F-34095 Montpellier 5, France
[2] Natl Inst Adv Ind Sci & Technol, CAN FOR, Tsukuba, Ibaraki 3058562, Japan
[3] Rhein Westfal TH Aachen, Inst Phys 1, Lehrstuhl Phys Mat, D-52056 Aachen, Germany
[4] ESRF, F-38343 Grenoble, France
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 02期
关键词：
THIN-FILMS; MECHANISM;
D O I：
10.1063/1.2752016
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors demonstrate that the cubic phase of quasibinary GeTe-Sb2Te3 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. (C) 2007 American Institute of Physics.
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页数：3
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