The effect of replacing Co with Fe in disordered CoPtRh alloy films was investigated with the aim to increase the spin magnetic moment. The addition of Fe into a pure Co film produced a Co98Fe2 film with maximum uniaxial magnetocrystalline anisotropy (Ku), because the magnetic moment is increased with the same degree of stacking faults (SFs) induced into the hcp grains as that for a pure Co film. (Co 0.98Fe0.02)PtRh films were compared with CoPtRh films with the same Pt and Rh contents, which revealed that: 1) the degree of SFs were increased; 2) the magnetic moment was increased; and 3) Ku was decreased for all compositions in the (Co0.98Fe0.02)PtRh films. In particular, the (Co0.98Fe0.02)PtRh and CoPtRh films with a larger Rh content than Pt have a greater range for increase of the Ku magnitude by enhancement of the magnetic moment with the retention of or further decrease in the degree of SFs.
- Hcp CoPtRh alloy films
- magnetocrystalline anisotropy
- spin-orbit interaction
- stacking faults
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering