Soft Magnetism, Magnetostriction and Microwave Properties of Fe-Ga-C Alloy Films
Xianfeng Liang, Cunzheng Dong, Sue J Celestin, Xinjun Wang, Huaihao Chen, Katherine S Ziemer, Michael Page, Michael Mcconney, John G Jones, Brandon M Howe, Nianxiang Sun
IEEE | Retrieved from Google Scholar
Uploaded 2021/5/24
Soft magnetism, magnetostriction, and microwave properties of Fe-Ga-C alloy films
Publication date : 2018/12/23
Journal : IEEE Magnetics Letters
Volume : 10
Pages : 1-5
Publisher : IEEE
Description
A systematic investigation of the soft magnetism, the change of modulus of elasticity with magnetization (ΔE effect), magnetostriction, and microwave properties has been carried out on iron-gallium-carbon thin films over a wide carbon content range. The phase transformation of the Fe-Ga-C films from bcc polycrystalline to amorphous leads to excellent magnetic softness with a low coercivity of less than 1 Oe, high saturation magnetization, narrow ferromagnetic resonance linewidth at 10 GHz of 20 to 30 Oe, and an ultra-low Gilbert damping constant of 0.0027. A record high piezomagnetic coefficient of 9.71 ppm/Oe, high saturation magnetostriction constant of 81.2 ppm, and large ΔE effect of -120 GPa at 500 nm were achieved.