1Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084 2Beijing National Center for Electron Microscopy, Tsinghua University, Beijing 100084 3Centre for Brain-Inspired Computing Research, Tsinghua University, Beijing 100084 4Research Institute for Magnetoelectronics & Weak Magnetic-field Detection, College of Science, China Three Gorges of University, Yichang 443002 5Institute of Microelectronics, Tsinghua University, Beijing 100084
Abstract：An amorphous magnetic material system (Co$_{20}$Fe$_{47}$Ta$_{20}$B$_{13})_{1-x}$O$_{x}$ 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.
Chen N, Li H, Hirata A, Luo Z, Wang Z, Liu W, Cui B, Hitosugi T, Gu L, Zhang X, Zhang X, Song C, Wang X, Zhang L, Cao J, Ohmura K, Ketov S V, Yao K, Chen M and Louzguine-Luzgin D V 2017 Mater. Des.132 208
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Liu W, Zhang H, Shi J, Wang Z, Song C, Wang X, Lu S, Zhou X, Gu L, Louzguine-Luzgin D V, Chen M, Yao K and Chen N 2016 Nat. Commun.7 13497
2019, Vol. 36 
