Effect of chemical ordering annealing on superelasticity of Ni–Mn–Ga–Fe ferromagnetic shape memory alloy microwires

Liu Yanfen^{1, †}, Zhang Xuexi², Shen Hongxian², Sun Jianfei², Li Qinan¹, Liu Xiaohua¹, Li Jianjun¹, Cheng Weidong¹

Magnetic properties of as-extracted and annealed Ni₅₀Mn₂₅Ga₂₀Fe₅ microwires. (a) Magnetization vs. temperature (M–T) curves under an external magnetic field of 10 Oe. (b) Magnetization curves (M–H) at room temperature.