中国物理B ›› 2015, Vol. 24 ›› Issue (12): 127502-127502.doi: 10.1088/1674-1056/24/12/127502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Structure, morphology, and magnetic properties of high-performance NiCuZn ferrite

何学敏, 颜士明, 李志文, 张星, 宋雪银, 乔文, 钟伟, 都有为   

  1. Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Jiangsu Provincial Laboratory for NanoTechnology and Department of Physics, Nanjing University, Nanjing 210093, China
  • 收稿日期:2015-04-05 修回日期:2015-08-05 出版日期:2015-12-05 发布日期:2015-12-05
  • 通讯作者: Zhong Wei E-mail:wzhong@nju.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174132, 11474151, and U1232210), the National Key Project for Basic Research, China (Grant Nos. 2011CB922102 and 2012CB932304), the Innovation Program for Doctoral Research of Jiangsu Province, China (Grant No. CXZZ130035), and the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions, China.

Structure, morphology, and magnetic properties of high-performance NiCuZn ferrite

He Xue-Min (何学敏), Yan Shi-Ming (颜士明), Li Zhi-Wen (李志文), Zhang Xing (张星), Song Xue-Yin (宋雪银), Qiao Wen (乔文), Zhong Wei (钟伟), Du You-Wei (都有为)   

  1. Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Jiangsu Provincial Laboratory for NanoTechnology and Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2015-04-05 Revised:2015-08-05 Online:2015-12-05 Published:2015-12-05
  • Contact: Zhong Wei E-mail:wzhong@nju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174132, 11474151, and U1232210), the National Key Project for Basic Research, China (Grant Nos. 2011CB922102 and 2012CB932304), the Innovation Program for Doctoral Research of Jiangsu Province, China (Grant No. CXZZ130035), and the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions, China.

摘要: High-performance submicron-scaled NiCuZn ferrites are prepared by the solid-state reaction method through using CuO as additive. In the synthesis process, a mixture of superfine powder is sintered at 900 ℃ for 3 h, and the obtained product is NiZn-ferrite with spinel structure. We observe that the particle size increases with raising the sintering temperature. The NiCuZn ferrite with relatively uniform size and granular shape has the best performance: its coercivity is 14 Oe (1 Oe=79.5775 A·m-1) and saturation magnetization is 48 emu/g. We also study the effects of particle size, magnetocrystalline anisotropy, and microstructure on coercivity. The method presented here is convenient and economical for producing the high-permeability ferrite powders.

关键词: soft-magnetic properties, size effect, magnetocrystalline anisotropy

Abstract: High-performance submicron-scaled NiCuZn ferrites are prepared by the solid-state reaction method through using CuO as additive. In the synthesis process, a mixture of superfine powder is sintered at 900 ℃ for 3 h, and the obtained product is NiZn-ferrite with spinel structure. We observe that the particle size increases with raising the sintering temperature. The NiCuZn ferrite with relatively uniform size and granular shape has the best performance: its coercivity is 14 Oe (1 Oe=79.5775 A·m-1) and saturation magnetization is 48 emu/g. We also study the effects of particle size, magnetocrystalline anisotropy, and microstructure on coercivity. The method presented here is convenient and economical for producing the high-permeability ferrite powders.

Key words: soft-magnetic properties, size effect, magnetocrystalline anisotropy

中图分类号:  (Metals and alloys)

  • 75.20.En
75.30.Gw (Magnetic anisotropy) 75.50.Gg (Ferrimagnetics)