The composition dependence of the degree of chemical order S and uniaxial magnetic anisotropy energy Ku has been investigated for FePt (001) and FePt (110) films deposited at the substrate temperature Ts = 300°C, and the optimum compositional region for L10 ordering in FePt (110) films has been compared with that in FePt (001) films. It has been found that high S and large Ku are obtained around the stoichiometric composition for FePt (110) films, whereas they are obtained around an off-stoichiometric Pt-rich composition for FePt (001) films, indicating that the difference in optimum compositions for achieving highly ordered structure between FePt (001) and FePt (110) films at reduced temperature.
- Composition dependence
- FePt thin film
- Low-temperature fabrication
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering