ELASTIC COEFFICIENTS IN TLGA(S1-XSEX)2 AND TLINXGA1-XS2 LAYER MIXED-CRYSTALS BY BRILLOUIN-SCATTERING

被引：11

作者：

GASANLY, NM

AKINOGLU, BG

ELLIALTIOGLU, S

LAIHO, R

BAKHYSHOV, AE

机构：

[1] BAKU STATE UNIV,DEPT PHYS,BAKU,AZERBAIJAN

[2] UNIV TURKU,WIHURI PHYS LAB,SF-20500 TURKU 50,FINLAND

来源：

PHYSICA B | 1993年 / 192卷 / 04期

关键词：

D O I：

10.1016/0921-4526(93)90013-V

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The compositional variation of the elastic coefficients C-11 and C33 for TlGa(S1-xSex) and TlInxGa1-xS2 layer mixed crystals are discussed using Brillouin scattering measurements. Clear anomalies are observed for the longitudinal phonons propagating parallel to the (00 1) plane (elastic coefficient C-11) at x(c) congruent-to 0.8 and x(c) congruent-to 0.3 in TlInxGa1-xS2 and TlGa(S1-xSex)2, respectively. These anomalies are explained by the formation of infinite clusters. A considerable difference in the rate of change of the elastic coefficient C33 with the composition for the mixed crystals TlGa(S1-xSex)2 and TlInxGa1-xS2 is observed. The temperature variation of C33 for a TlIn0.95Ga0.05S2 mixed crystals is also given and the results are discussed.

引用

页码：371 / 377

页数：7

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