Electromagnetic generation of ultrasound in ferromagnets

V.D. Buchel’nikov^a, A.N. Vasil’ev^b, c, d
^aChelyabinsk State University, ul. Bratev Kashirinykh 129, Chelyabinsk, 454021, Russian Federation
^bDepartment of Theoretical Physics, Institute of Physics, St. Petersburg State University, ul. Ulyanovskaya 1, Petrodvorez, St. Petersburg, 198904, Russian Federation
^cLomonosov Moscow State University, Vorobevy Gory, Moscow, 119991, Russian Federation
^dLomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation

This review discusses the principal physical mechanisms responsible for direct electromagneticacoustic conversion in ferromagnets. It is shown that in a wide range of frequency, magnetic field, and temperature ultrasound is generated via the inductive and magnetoelastic interactions. In the latter mechanism features are observed that are due to the displacement of domain walls and spin flip, and are also observed at various phase transitions. A detailed comparison of the theory of electromagnetic excitation of ultrasound with experimental data obtained for 3d and 4f magnets also showed that this phenomenon can be used as a precise method of constructing magnetic phase diagrams of magnets and determining their homogeneous and inhomogeneous exchange interaction constants, and the magnetic anisotropy and magnetostriction constants.

PACS: 75.80.+q, 75.30.Kz, 75.50.−y, 75.30.Gw, 75.30.Et, 75.60.Ch (all)
DOI: 10.1070/PU1992v035n03ABEH002222
URL: https://ufn.ru/en/articles/1992/3/b/
Citation: Buchel’nikov V D, Vasil’ev A N "Electromagnetic generation of ultrasound in ferromagnets" Sov. Phys. Usp. 35 (3) 192–211 (1992)

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Оригинал: Бучельников В Д, Васильев А Н «Электромагнитное возбуждение ультразвука в ферромагнетиках» УФН 162 (3) 89–128 (1992); DOI: 10.3367/UFNr.0162.199203b.0089

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