Title :
Interference effect in Love-type magneto-surface acoustic waves
Author :
Kavalerov, V. ; Matsugi, J. ; Aono, A. ; Inoue, M. ; Fujii, T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan
fDate :
11/1/1995 12:00:00 AM
Abstract :
The propagation properties of Love-type magneto-surface acoustic waves (MSAW) in FeB/SiOx multilayers (0.5 μm×10) have been studied. The insertion loss of MSAW devices was found to vary with the applied field strength and orientation angle in an approximately periodic fashion. When the acoustic aperture was restricted to a narrow strip along the center line of a square magnetic film (1 cm×1 cm), the oscillations of the insertion loss were greatly reduced. Calculation of the demagnetizing field showed that the resultant inhomogeneity of the internal field can produce the delay difference of the partial waves up to 1.5-2 wavelengths (λ=36 μm), and cause their interference at the output transducer
Keywords :
boron alloys; iron alloys; magnetic multilayers; magnetoacoustic effects; magnetostatic surface waves; silicon compounds; surface acoustic waves; surface magnetism; 0.5 mum; 1 cm; 36 mum; FeB-SiO; FeB/SiOx multilayers; Love-type magneto-surface acoustic waves; applied field strength; approximately periodic fashion; demagnetizing field; insertion loss; interference effect; internal field inhomogeneity; orientation angle; propagation properties; square magnetic film; Acoustic devices; Acoustic propagation; Acoustic waves; Apertures; Insertion loss; Interference; Magnetic films; Magnetic multilayers; Magnetic properties; Strips;
Journal_Title :
Magnetics, IEEE Transactions on
