Crystallization-induced short-range order changes in amorphous GeTe

被引：67

作者：

Kolobov, AV

Fons, P

Tominaga, J

Ankudinov, AL

Yannopoulos, SN

Andrikopoulos, KS

机构：

[1] Natl Inst Adv Ind Sci & Technol, Ctr Appl Near Field Opt Res, Tsukuba, Ibaraki 3058562, Japan

[2] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[3] Fdn Res & Technol Hellas, Inst Chem Engn & High Temp Chem Proc, FORTH, ICE HT, Patras 26500, Greece

[4] Aristotle Univ Thessaloniki, Sch Technol, Div Phys, GR-54124 Thessaloniki, Greece

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 44期

关键词：

D O I：

10.1088/0953-8984/16/44/008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：S5103 / S5108

页数：6

共 16 条

[1] Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure [J].