Title :
Acousto-magnetic effect: experimental evidence and magnetic field sensor applications
Author :
Asainov, A.F. ; Korshak, B.A. ; Kunetzov, M.V. ; Solodov, I.Yu.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
The first experimental observation of the acoustically induced d.c. magnetization (acousto-magnetic effect (AME)) is reported for intense SAW in a layered structure LiNbO3-FeMoP. An amorphous magnetostrictive film exhibited a strong magnetoacoustic (MA) nonlinear behavior under the MA-resonance conditions at extremely low magnetic field ≅30 Oe for 30-MHz MASAW. Convolution efficiency was measured to be as high as -48 dBm. Transversal AME observed in the experiment was found to be even on MASAW propagation direction and odd in respect to a bias magnetic field orientation. A feasibility of AME applications for a high-sensitive scanning magnetic field sensor was demonstrated
Keywords :
amorphous magnetic materials; iron alloys; lithium compounds; magnetic multilayers; magnetic sensors; magnetoacoustic effects; magnetoacoustic resonance; molybdenum alloys; phosphorus alloys; surface acoustic wave convolution; surface acoustic wave sensors; 30 MHz; DC magnetization; LiNbO3-FeMoP; MASAW; SAW; acousto-magnetic effect; amorphous magnetostrictive film; convolution efficiency; layered structure; magnetoacoustic resonance; nonlinear behavior; scanning magnetic field sensor; Amorphous magnetic layered films/devices; Iron materials/devices; Lithium materials/devices; Magnetic transducers; Magnetoelasticity; Molybdenum materials/devices; Phosphorus materials/devices; Surface acoustic wave convolvers; Surface acoustic wave detectors;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401630
