Title :
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
fDate :
3/1/1988 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
