Abstract
The magnetic field (H) dependences of the ultrasonic attenuation Δα(H) and the relative velocity ΔV(H) responses of 0.6 GHz Rayleigh-mode surface acoustic wave pulses in vacuum-evaporated, uniaxially anisotropic nickel thin films were measured and correlated with changes in the sample’s dc magnetoresistance Δρ(H). Recent advances in film preparation techniques have resulted in low magnetic anisotropy dispersion samples with enhanced magnetoelastic responses at small H [Δα(H)≊80 dB/cm and ΔV(H)/V≊0.07% as H varies from 0 to 100 Oe].
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