Effect of annealing temperature on coercivity of amorphous FeSiBNb films

[摘要] Amorphous FeSiBNb films with various Nb content were prepared via DC magnetron sputtering, and the effect of the annealing temperature on the magnetic properties of the films was investigated. The as-deposited samples exhibited an in-plane magnetic anisotropy and a large coercivity. Annealing at a certain temperature resulted in the decrease of the coercivity to the minimum value indicating the homogenization of the internal stress distribution. Also, the in-plane magnetic anisotropy almost disappeared due to the isotropic-tensile stress induced by the difference in the linear expansion coefficient between the substrate and the film. The in-plane anisotropy also disappeared after annealing. It is inferred that the addition of Nb raises the crystallization temperature and lowers the minimum coercivity of the film.

[发布日期] 2021-12-15

[关键词] Amorphous;Soft magnetic properties;FeSiB