Core-shell structured Sm2Fe17N3 magnetic particles prepared by combining HDDR and reduction diffusion process
Abstract
A novel approach is proposed wherein the hydrogenation-disproportionation-desorption-recombination (HDDR) Sm2Fe17 particles containing α-Fe were used as the starting material and reacted with Sm fabricated by Sm2O3 reduction through diffusion to form new Sm2Fe17 particles with core (HDDR grain) and shell (reduction diffusion grain) structural characteristics. Further research reveals that by optimizing the nitridation and ball-milling processes of the reduction diffusion (RD)-treated HDDR Sm2Fe17 magnetic particles, it is possible to produce Sm2Fe17N3 magnetic particles with a maximum energy product [(BH)max] exceeding 20 MGOe, surpassing the (BH)max of the currently reported HDDR isotropic Sm2Fe17N3 magnetic particles. The corresponding studies on microstructure and magnetism indicate that the differences in magnetic performance between the RD treated HDDR Sm2Fe17N3 and the conventional HDDR isotropic Sm2Fe17N3 magnetic particles are attributed to variations in their microstructure and phase composition.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (15)
Tao Zhu
Zhejiang Key Laboratory of Precise Synthesis of Functional Molecules, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou 310030, Zhejiang Province, P. R. China
Xianghao Ji
Center of Free Electron Laser and High Magnetic Field, and Leibniz International Joint Research Center of Materials Sciences of Anhui Province, Anhui University 2 , Hefei 230601,
Jingzhi Han
Institute of Condensed Matter and Material Physics, School of Physics, Peking University 1 , Beijing 100871,
Hui-Dong Qian
Institute of Condensed Matter and Material Physics, School of Physics, Peking University 1 , Beijing 100871,
Dong Liang
Yuankang Wang
School of Integrated Circuits, Shandong University , Jinan 250101,
Peng Shen
Qing Xu
Chuanqi Fang
Institute of Condensed Matter and Material Physics, School of Physics, Peking University 1 , Beijing 100871,
Shuai Guo
Department of Chemistry
Shunquan Liu
Institute of Condensed Matter and Material Physics, School of Physics, Peking University 1 , Beijing 100871,
Wenyun Yang
Institute of Condensed Matter and Material Physics, School of Physics
Xuegang Chen
Jinbo Yang
Institute of Condensed Matter and Material Physics, School of Physics
Yingchang Yang
Institute of Condensed Matter and Material Physics, School of Physics