Micromagnetic simulation of Au interlayer in L1<sub class="a-plus-plus">0sub>-FePt nanocomposite recording medium

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• 作者：Sa-Zi Li ; Su-Fen Zhao ; Yong Xie ; Zi-Yu Chen
• 关键词：FePt multilayer ; Magnetic recording materials ; Perpendicular anisotropy ; Micromagnetic simulation
• 刊名：Rare Metals
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：36
• 期：2
• 页码：108-112
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Nanotechnology; Ceramics, Glass, Composites, Natural Materials; Surfaces and Interfaces, Thin Films; Inorganic Chemistry; Physical Chemistry;
• 出版者：Nonferrous Metals Society of China
• ISSN：1867-7185
• 卷排序：36

文摘

Owing to the epitaxial inducement of Au atom, Au interlayer was introduced to increase the perpendicular anisotropy and the coercivity in L1<sub>0sub>-FePt nanocomposite film. Micromagnetics can be used to reveal the relationship between microstructure and magnetic properties of materials, and give the information of the perpendicular anisotropy and coercivity. In this work, the effect of the Au interlayer on annealed [Fe (0.5 nm)/Pt (0.5 nm)/Au (d nm)]<sub>10sub> nanocomposite recording medium by a micromagnetic model was studied. The model contains three phases: hard magnetic phase, soft magnetic phase, and nonmagnetic phase. The calculated result shows that perpendicular orientation degree of the texture and proportion of a hard magnetic phase to the total phase in the annealed film are both enhanced by increasing Au interlayer thickness. This result can be conducive to the improvement of the perpendicular anisotropy and the coercivity of the FePt nanocomposite film in the experiments.