Soft magnetism, magnetostriction, and microwave properties of FeGaB thin films
- Center for Microwave Magnetic Materials and Integrated Circuits (CM3IC), Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115 (United States)
A series of (Fe{sub 100-y}Ga{sub y}){sub 1-x}B{sub x} (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 <1 Oe, high 4{pi}M{sub s}, 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.
- OSTI ID:
- 21013765
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 91; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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