Magnetooptical detection of standing longitudinal hypersound waves excited by uniform FMR mode

Author

Romanov, Dmitriy A. ; Rudashevsky, Evgeniy G. ; Nikolaev, Evgeniy I.

Author_Institution

General Phys. Inst., Moscow, Russia

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3405

Lastpage

3407

Abstract

The ferromagnetic resonance (FMR) of Bi-containing LPE garnet film on a GGG substrate has been investigated at frequencies of 0.4-1.2 GHz. FMR magnetooptical detection has been used to measure the magnetization precession amplitude. It was found that a strong interaction between precessing magnetization in the garnet film and longitudinal standing elastic waves in the film/substrate structure is possible only if external magnetic field is inclined on a small angle with respect to the film plate. Such elastic resonances lead to a fine structure of the FMR line. The dependence of the efficiency of this effect upon external magnetic field direction and magnetization orientation was studied experimentally and theoretically

Keywords

bismuth compounds; ferrimagnetic properties of substances; ferromagnetic resonance; garnets; magnetic epitaxial layers; magneto-optical effects; magnetoelastic waves; 0.4 to 1.2 GHz; Bi₃Fe₅O₁₂; GdGG substrate; GdGa5O12; LPE garnet film; elastic resonances; external magnetic field direction; magnetization orientation; magnetization precession amplitude; magnetooptical detection; standing longitudinal hypersound waves; uniform FMR mode; Frequency; Garnet films; Magnetic field measurement; Magnetic films; Magnetic resonance; Magnetoelasticity; Magnetooptic effects; Optical polarization; Saturation magnetization; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280829

Filename

280829