INELASTIC AND QUASI-ELASTIC LIGHT-SCATTERING IN (NACN)1-X(KCN)X QUADRUPOLAR GLASSES

被引：8

作者：

BERRET, JF ^{[1
]}

FEILE, R ^{[1
]}

机构：

[1] UNIV MAINZ, INST PHYS, W-6500 MAINZ, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1990年 / 80卷 / 02期

关键词：

D O I：

10.1007/BF01357503

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The elastic constants c11 and c44, and the attenuation of longitudinal phonons along (100)-direction in (NaCN)1-x(KCN)x mixed crystals have been determined by brillouin spectroscopy in the temperature range from T=10K-300K. Minima in c44 (T) which determine the freezing temprature TF in these orientational glasses appear at lower temperatures compared to neutron scattering results. The coupling of molecular reorientations to longitudinal phonons in NaCN-rich smaples shows up in dispersion effects in c11 (T) and the appearence of a dynamical central peak near TF. © 1990 Springer-Verlag.

引用

页码：203 / 206

页数：4

共 20 条

[1] BRILLOUIN-SCATTERING STUDY OF THE ORIENTATIONAL GLASS-TRANSITION IN (KCL)1-X(KCN)X MIXED-CRYSTALS [J].