摘要
Bulk anisotropic Sm_(2)Co_(7) nanocrystalline magnets were successfully prepared by hot deformation process using spark plasma sintering technology.The coercivity of the isotropic Sm_(2)Co_(7) nanocrystalline magnet is 34.76 kOe,further,the ultra-high coercivity of 50.68 kOe is obtained in the anisotropic hot deformed Sm_(2)Co_(7) magnet when the height reduction is70%,which is much higher than those of the ordinarily produced hot deformed Sm_(2)Co_(7) magnet.X-ray diffraction(XRD)analysis shows that all the samples are Sm_(2)Co_(7) single phase.The investigation by electron backscatter diffraction indicates that increasing the amount of deformation is beneficial to the improvement of the(001) texture of Sm_(2)Co_(7) magnets.The Sm_(2)Co_(7) nanocrystalline magnet generates a strong c-axis crystallographic texture during large deformation process.
作者
Qiang Ma
Meishuang Jia
Zhifeng Hu
Ming Yue
Yanli Liu
Tongyun Zhao
Baogen Shen
马强;贾美爽;胡智峰;岳明;刘艳丽;赵同云;沈保根(State Key Laboratory of Magnetism,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Science,Inner Mongolia University of Science and Technology,Baotou 014010,China;College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China)
基金
Project supports by the Science Center of the National Natural Science Foundation of China(Grant No.52088101)
the National Natural Foundation of China(Grant No.51590880)
the Fujian Institute of Innovation,Chinese Academy of Sciences(Grant No.FJCXY18040302)
the Key Program of the Chinese Academy of Sciences(Grant No.KJZD-EW-M05-1)
the Natural Science Foundation of Inner Mongolia,China(Grant Nos.2018LH05006 and2018LH05011)。
作者简介
Corresponding author:Baogen Shen.E-mail:shenbg@iphy.ac.cn。
