BGS-type Magneto-Surface-Acoustic-Wave Devices Utilizing Horizontally Polarized PZT-Substrates

BGS-type magneto-surface-acoustic-wave(MSAW) devices were constructed by depositing highly magnetostrictive amorphous Fe-Co-B ternary alloy films by RF-sputtering on horizontally polarized PZT-substrates, since this type of MSAW is expected from our theory to have wide controllability of the propagation properties with externally applied magnetic field in comparison with those of the Rayleigh-type MSAW. We measured changes of attenuation and phase velocity as a function of magnetic field, and the results agree qualitatively with those obtained by the theoretical analysis.