Microstructures and Magnetic Anisotropy of Single-Layered Fe-Pt Alloy Films by In-Situ Annealing
The single-layered Fe-Pt films with thickness of 30 nm are in-situ deposited directly on Si substrate at various substrate temperatures (Ts ) of 350 to 590 °C. As the Fe-Pt film is sputtered at substrate temperature is 350 °C, it shows (111) preferred orientation and tends to in-plane magnetic anisotropy. The L10 Fe-Pt film with (001) texture is obtained and exhibited perpendicular magnetic anisotropy as the substrate temperature is increased to 470 °C. The perpendicular coercivity (Hc⊥), saturation magnetization (Ms) and perpendicular squareness (S⊥) of this film are 6.9 kOe, 674 emu/cm3 and 0.89, respectively, which reveal its significant potential as perpendicular magnetic recording media.
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Document Type: Research Article
Publication date: 2012-02-01
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