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Generation and Detection of Magnetoelastic Waves in Magnetic Thin Films Using Planar Coils

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3 Author(s)
Miyatake, H. ; Osaka University. ; Tsujimoto, H. ; Shirae, K.

While many magnetoelastic wave (MEW) devices employ piezoelectric methods for wave generation, the authors demonstrate the feasibility of generating and detecting MEWs using a pair of planar coils. An Fe-Si-B magnetic film sputtered onto glass was used; waves were found to propagate in both the magnetic film and the glass. For the film with an MEW velocity of 5 × 103 km/s and coil pitch of 1 mm, the detection output should be strongest at multiples and fractions of the 5 MHz fundamental, and in fact output peaks were observed at 1.3, 1.7, and 2.5 MHz.

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Magnetics in Japan, IEEE Translation Journal on  (Volume:1 ,  Issue: 9 )