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Microstructures and Magnetic Anisotropy of Single-Layered Fe-Pt Alloy Films by In-Situ Annealing

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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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Keywords: IN-SITU ANNEALING; PERPENDICULAR MAGNETIC ANISOTROPY; SINGLE-LAYERED FE-PT FILMS; SUBSTRATE TEMPERATURE

Document Type: Research Article

Publication date: 2012-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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