Crystallographic Structure and Magnetic Properties in L10 FePt Thin Films Deposited at Different Temperature
The crystallographic structure and magnetic properties of L10 FePt thin films deposited at different substrate temperature were investigated systematically in present paper. The ordered L10 FePt thin film was developed when substrate temperature is higher than 300 °C. The ordering parameter S, the degree of tetragonality c/a, and the epitaxial quality of the films, increase with increasing substrate temperature. The squareness and coercivity in the direction perpendicular to the film increase as the substrate temperature is increased and the perpendicular anisotropy is developed when the substrate temperature is higher than 300 °C. The magnetic anisotropy K u increases with increasing substrate temperature and it might be concluded that the magnetic anisotropy of ordered L10FePt thin films mainly stems from the magnetocrystalline origin and also possibly due to pair ordering mechanism.
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Document Type: Research Article
Publication date: 2012-02-01
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