Effect of Ni doping on the microstructure and magnetic properties of FePt films
来源期刊：Rare Metals2009年第3期
论文作者：DONG Kaifeng, CHENG Xiaomin, YAN Junbing, CHENG Weiming, LI Peng, and YANG Xiaofei Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan , China
文章页码：257 - 260
摘 要：FePtNi films with different Ni contents were deposited on glass substrates by RF magnetron sputtering, and the L10-FePtNi films were obtained after the asdeposited samples were subjected to vacuum annealing. The magnetic properties, structures, and orientations of the L10-FePt films with Ni doping were studied. The results show that with increasing Ni content, the （001） peak position of the FePtNi films shifts to a higher angle in comparison with FePt, which suggests that there is partial Ni substitution in the L10 lattice. The perpendicular coercivity decreases from 661 to 142 kA/m and magnetization decreases from 512 to 433 kA/m with increasing Ni content. In comparison with FePt films, the FePtNi films can effectively reduce the Curie temperature, which makes FePtNi films promising media candidates in thermally assisted recording （TAR）.
DONG Kaifeng, CHENG Xiaomin, YAN Junbing, CHENG Weiming, LI Peng, and YANG Xiaofei Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
摘 要：FePtNi films with different Ni contents were deposited on glass substrates by RF magnetron sputtering, and the L10-FePtNi films were obtained after the asdeposited samples were subjected to vacuum annealing. The magnetic properties, structures, and orientations of the L10-FePt films with Ni doping were studied. The results show that with increasing Ni content, the （001） peak position of the FePtNi films shifts to a higher angle in comparison with FePt, which suggests that there is partial Ni substitution in the L10 lattice. The perpendicular coercivity decreases from 661 to 142 kA/m and magnetization decreases from 512 to 433 kA/m with increasing Ni content. In comparison with FePt films, the FePtNi films can effectively reduce the Curie temperature, which makes FePtNi films promising media candidates in thermally assisted recording （TAR）.
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