Mechanically tunable magnetic properties of Fe{sub 81}Ga{sub 19} films grown on flexible substrates
- Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China)
We investigated on magnetic properties of magnetostrictive Fe{sub 81}Ga{sub 19} films grown on flexible polyethylene terephthalate (PET) substrates under various mechanical strains. The unstrained Fe{sub 81}Ga{sub 19} films exhibit a significant uniaxial magnetic anisotropy due to a residual stress in PET substrates. It was found that the squareness of hysteresis loops can be tuned by an application of strains, inward/compressive or outward/tensile bending of the films. A modified Stoner-Wohlfarth model with considering a distribution of easy axes in polycrystalline films was developed to account for the mechanically tunable magnetic properties in flexible Fe{sub 81}Ga{sub 19} films. These results provide an alternative way to tune mechanically magnetic properties, which is particularly important for developing flexible magnetoelectronic devices.
- OSTI ID:
- 22025480
- Journal Information:
- Applied Physics Letters, Vol. 100, Issue 12; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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