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

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

4115

Lastpage

4117

Abstract

The propagation properties of Love-type magneto-surface acoustic waves (MSAW) in FeB/SiO_x 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/SiO_x 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489879

Filename

489879