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Soft Magnetism, Magnetostriction And Microwave Properties Of Fegab Thin Films, Jing Lou, R. E. Insignares, Zhuhua Cai, Katherine S. Ziemer, Ming Liu, Nian X. Sun
Soft Magnetism, Magnetostriction And Microwave Properties Of Fegab Thin Films, Jing Lou, R. E. Insignares, Zhuhua Cai, Katherine S. Ziemer, Ming Liu, Nian X. Sun
Nian X. Sun
A series of (Fe100−yGay)1−xBx (x=0–21 and y=9–17) films were deposited; their microstructure, soft magnetism, magnetostrictive behavior, and microwave properties were investigated. The addition of B changes the FeGaB films from polycrystalline to amorphous phase and leads to excellent magnetic softness with coercivity Oe, high 4πMs, self-biased ferromagnetic resonance (FMR) frequency of 1.85 GHz, narrow FMR linewidth (X band) of 16–20 Oe, and a high saturation magnetostriction constant of 70 ppm. The combination of these properties makes the FeGaB films potential candidates for tunable magnetoelectric microwave devices and other rf/microwave magnetic device applications.