DISPERSION RELATIONS FOR PHONONS IN KCL AT 80 DEGREES K AND 300 DEGREES K

被引：71

作者：

RAUNIO, G

ALMQVIST, L

机构：

[1] Chalmers University of Technology, Gothenburg

[2] Ab Atomenergi, Studsvik, Nyköping

来源：

PHYSICA STATUS SOLIDI | 1969年 / 33卷 / 01期

关键词：

D O I：

10.1002/pssb.19690330118

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Phonon dispersion relations in KCl at 80°K have been determined using inelastic neutron scattering. The measurements have been performed mainly in the symmetry directions [100], [110], and [111], but also at some other points in the reciprocal space. More than one third of the phonons in all branches were also studied at 300°K in order to obtain and estimate of the temperature dependence of their frequencies. A comparison is made with dispersion curves calculated by Nüsslein and Schröder for their “breathing shell” variant of the shell model for ionic crystals. The agreement for the dispersion curves is quite satisfactory in the most cases. Copyright © 1969 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：209 / &

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