PRECESSIONAL, RELAXATION, AND ELASTIC OSCILLATIONS IN A FERROMAGNET IN THE REGION OF ORIENTATIONAL PHASE-TRANSITIONS

Authors
BUCHELNIKOV VD SHAVROV VG
Citation
Vd. Buchelnikov et Vg. Shavrov, PRECESSIONAL, RELAXATION, AND ELASTIC OSCILLATIONS IN A FERROMAGNET IN THE REGION OF ORIENTATIONAL PHASE-TRANSITIONS, JETP letters, 60(7), 1994, pp. 548-552
Citations number
6
Categorie Soggetti
Physics
Journal title
JETP letters → ACNP
ISSN journal
00213640
Volume
60
Issue
7
Year of publication
1994
Pages
548 - 552
Database
ISI
SICI code
0021-3640(1994)60:7<548:PRAEOI>2.0.ZU;2-V
Abstract
The effect of magnetization relaxation on the spectrum of precessional (spin) and elastic oscillations of a ferromagnet in the region of ori entational phase transitions is examined theoretically. Near an orient ational phase transitions, all oscillation modes (both spin and elasti c modes) can become purely relaxation oscillations. A relaxation mode is a soft mode at the point of an orientational phase transition. Cons equently, the 100% decrease in the sound velocity predicted by previou s theories cannot occur. (C) 1994 American Institute of Physics.