The temperature dependence of magnetic anisotropy was investigated for c-plane-oriented MnSb sputtered films. The main results were as follows: (1) A MnSb phase with low Mn contents between 50.1 at.% and 50.8 at.% was formed in c-plane-oriented MnSb films. (2) It was clarified that the perpendicular magnetic anisotropy, which originated from uniaxial magnetocrystalline anisotropy of NiAs-type hexagonal structure, changed from a negative value of -3.99×10 6erg/cm 3 at room temperature to a positive value of 3.73×10 5erg/cm 3 at 300°C. The perpendicular magnetic anisotropy crossed 0 erg/cm 3 at about 270°C. (3) The formation of the MnSb phase with Mn content of about 51.5 at.% was necessary to reduce the transition temperature, where the MnSb film changed its easy axis from the film plane to the film normal direction, to 150-200°C.
ASJC Scopus subject areas
- Physics and Astronomy(all)