MAGNON-PHONON INTERACTION OBSERVED IN FAR INFRARED STUDIES OF FECL2.2H2O AND COCL2.2H2O

被引：9

作者：

HAY, KA

TORRANCE, JB

机构：

[1] Division of Engineering and Applied Physics, Harvard University, Cambridge

来源：

JOURNAL OF APPLIED PHYSICS | 1969年 / 40卷 / 03期

关键词：

D O I：

10.1063/1.1657819

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A study has been made of spin waves in the antiferro-, ferri-, and ferromagnetic phases of FeCl2·2H2O. These levels are found to interact strongly with a field independent level at 31.5 cm -1. A similar interaction is found in CoCl2·2H 2O near 29.3 cm-1. This field independent level has been tentatively identified as a k=0, low-lying optical phonon. This phonon appears to be infrared active only because of its coupling with nearby magnon levels. The experimental data for both materials is well described by a phenomenological magnon-phonon interaction. © 1969 The American Institute of Physics.

引用

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