Synthesis and Soft Magnetic Properties of Mg-doped Ni Nanoparticles  

作　　者：YANG Jing-hai FENG Bo LIU Yang ZHANG Yong-jun YANG Li-li WANG Ya-xin LANG Ji-hui WANG Dan-dan 

机构地区：[1]The Institute of Condensed State Physics, Jilin Normal University, Siping 136000, P. R. China [2]Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China [3]Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China

出　　处：《Chemical Research in Chinese Universities》2008年第5期534-536,共3页高等学校化学研究（英文版）

基　　金：the National Natural Science Foundation of China(No.60778040);the Science and Technology Bureau of Jilin Province, China(No.20060518).

摘　　要：Mg-doped Ni nanoparticles with good soft magnetic properties were prepared with the sol-gel method and were sintered at 400, 500, 600, and 900℃ in argon atmosphere, respectively. The structure and magnetic properties of the samples were studied by means of X-ray diffraction, TEM, and VSM magnetometers. X-Ray powder diffraction results show that Ni-Mg solid solution was formed with the single phase of face-centered cubic（fcc） structure. The particle size became larger with the increase of temperature. When the sintering temperature was 400 °C, the particle size was 6.3 nm, whereas it was 46.2 nm at 900 °C. Both the saturation magnetization（Ms） and the coercivity were enhanced with the increase of the particle size. The Ms values of the samples ranged from 18.965 to 46.766 emu/g and the coercivity ranged from 1051.3568 to 9145.0848 A/m.Mg-doped Ni nanoparticles with good soft magnetic properties were prepared with the sol-gel method and were sintered at 400, 500, 600, and 900℃ in argon atmosphere, respectively. The structure and magnetic properties of the samples were studied by means of X-ray diffraction, TEM, and VSM magnetometers. X-Ray powder diffraction results show that Ni-Mg solid solution was formed with the single phase of face-centered cubic（fcc） structure. The particle size became larger with the increase of temperature. When the sintering temperature was 400 °C, the particle size was 6.3 nm, whereas it was 46.2 nm at 900 °C. Both the saturation magnetization（Ms） and the coercivity were enhanced with the increase of the particle size. The Ms values of the samples ranged from 18.965 to 46.766 emu/g and the coercivity ranged from 1051.3568 to 9145.0848 A/m.

关 键 词：Mg NI NANOPARTICLES Soft magnetic property Sol-gel method 

分 类 号：O44[理学—电磁学]