Inhomogeneous ferromagnetic resonance absorption in ferrites detected by photothermal deflection

Author

Geisau, O.V. ; Netzelmann, U. ; Pelzi, J.

Author_Institution

Inst. of Exp. Phys., Ruhr-Univ. Bochum, West Germany

Volume

24

Issue

2

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

1954

Lastpage

1956

Abstract

The lateral and depth dependence of ferromagnetic resonance microwave absorption in thin ferrite plates has been studied using the photothermal laser-beam-deflection technique. In the lateral resolved resonance spectra, spatial dependences are found of standing-wave absorption modes as well as local variations of the demagnetization field inside the sample. The lateral resolution achieved was about 200 mu m. The depth dependence of the microwave absorption was determined from the photothermal signal as a function of the microwave modulation frequency.

Keywords

ferrites; ferromagnetic resonance; photothermal effects; demagnetization field; depth dependence; ferrites; ferromagnetic resonance microwave absorption; inhomogeneous absorption; lateral resolution; lateral resolved resonance spectra; microwave modulation frequency; photothermal deflection; photothermal laser-beam-deflection technique; spatial dependences; standing-wave absorption modes; thin ferrite plates; Demagnetization; Electromagnetic wave absorption; Ferrites; Frequency modulation; Laser modes; Magnetic resonance; Masers; Microwave theory and techniques; Signal resolution; Spatial resolution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.11657

Filename

11657