ULTRASONIC PROPAGATION IN RBMNF3 .2. MAGNETOELASTIC PROPERTIES

被引：31

作者：

MELCHER, RL

BOLEF, DI

机构：

[1] Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca

[2] Arthur H. Compton Laboratory of Physics, Washington University, St. Louis

[3] National Science Foundation, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY

来源：

PHYSICAL REVIEW | 1969年 / 186卷 / 02期

关键词：

D O I：

10.1103/PhysRev.186.491

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A study of the propagation of rf ultrasonic waves in the antiferromagnetically ordered state of RbMnF3 is presented. Consideration of the effect of the sublattice magnetization orientation on the coupling between elastic and magnetic modes of the system results in the prediction of a strong magnetic field dependence of the measured elastic constants. Quantitative comparison with experiment is given, and the results are used to obtain values of the magnetoelastic coupling constants b1 and b2 and the anisotropy constant K at 4.2 K. The temperature dependence of the measured elastic constants, which show sharp anomalies at T60 K, is readily explained with the present model. © 1969 The American Physical Society.

引用

页码：491 / &

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