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On the Theory of Acoustic Properties of Many‐Domain Ferromagnets
Author(s) -
Mitsek A. I.,
Sirota D. I.,
Kolmakova N. P.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221130107
Subject(s) - acoustic attenuation , wavelength , physics , frequency domain , domain (mathematical analysis) , acoustic wave , reflection (computer programming) , attenuation , redistribution (election) , frequency spectrum , sound wave , acoustics , condensed matter physics , optics , mathematics , computer science , mathematical analysis , politics , law , political science , programming language , spectrum analyzer
The interaction of a sound wave and a movable domain structure which appears near orientational phase transitions of the first‐order type is considered. The viscous friction is taken into account. The wavelength is considered as being comparable with the domain structure period. The spectrum of magnetoelastic oscillations is calculated, it has a zone character. The evolution of the spectrum branches is investigated when the natural frequency of the domain wall oscillations changes. The attenuation and reflection of sound waves caused by the redistribution of energy between the direct and reverse waves are studied.