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Magnetization of Co-Fe-Ta-B-O Amorphous Thin Films

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【Author】 Chengyue Xiong;Cheng Chen;Wen Sun;Ziyao Lu;Hongming Mou;Xiaozhong Zhang;Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering,Tsinghua University;Beijing National Center for Electron Microscopy, Tsinghua University;Centre for Brain-Inspired Computing Research, Tsinghua University;Research Institute for Magnetoelectronics & Weak Magnetic-field Detection, College of Science,China Three Gorges of University;Institute of Microelectronics, Tsinghua University;

【通讯作者】章晓中;

【机构】 Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering,Tsinghua University； Beijing National Center for Electron Microscopy, Tsinghua University； Centre for Brain-Inspired Computing Research, Tsinghua University； Research Institute for Magnetoelectronics & Weak Magnetic-field Detection, College of Science,China Three Gorges of University； Institute of Microelectronics, Tsinghua University；

【摘要】 An amorphous magnetic material system(Co₂₀Fe₄₇Ta₂₀B₁₃)_1-xO_x is fabricated by magneto sputtering. Three stages of magnetization behavior exist when oxygen content changes in the system. As the oxygen increases, the absence of percolation effect of magnetic nano-particles makes the multi-domain structure broken so that high coercivity appears in the samples with proper oxygen content. A temperature-dependent Stoner–Wohlfarth model is used to explain the magnetization properties at relatively high temperature. Magnetizations with magnetic field in and out of the sample plane are also investigated to prove the mechanisms. This work provides a systematic study of a new kind ofv amorphous magnetic system and is helpful for us to know more about this type of material.更多还原

【Abstract】 An amorphous magnetic material system(Co₂₀Fe₄₇Ta₂₀B₁₃)_1-xO_x is fabricated by magneto sputtering. Three stages of magnetization behavior exist when oxygen content changes in the system. As the oxygen increases, the absence of percolation effect of magnetic nano-particles makes the multi-domain structure broken so that high coercivity appears in the samples with proper oxygen content. A temperature-dependent Stoner–Wohlfarth model is used to explain the magnetization properties at relatively high temperature. Magnetizations with magnetic field in and out of the sample plane are also investigated to prove the mechanisms. This work provides a systematic study of a new kind ofv amorphous magnetic system and is helpful for us to know more about this type of material.更多还原

【关键词】 magnetization； coercivity； amorphous； sputtering； helpful； magneto； broken； ferromagnetic； systematically； explain；

【基金】 Supported by the National Key Research and Development Program of China under Grant No 2017YFA0206202;the National Natural Science Foundation of China under Grant Nos 51471093 and 116741901

【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2019年07期

【分类号】TB383.2
【下载频次】18

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