Structural and magnetic properties of Mg-substituted NiZnCo ferrite nanopowders

被引：16
|
作者：
Li, Le-Zhong [1 ,2 ]
Yu, Zhong [1 ]
Lan, Zhong-Wen [1 ]
Sun, Ke [1 ]
Wu, Chuan-Jian [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
[2] Chengdu Univ Informat Technol, Coll Optoelect Technol, Chengdu 610225, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期
关键词：
NiZnCo ferrite nanopowder; Sol-gel auto-combustion process; Mg substitution; Structure; Magnetic properties; ELECTRICAL-PROPERTIES; PHYSICAL-PROPERTIES; CATION DISTRIBUTION; SPINEL FERRITES; GEL METHOD; NANOPARTICLES; CO; TEMPERATURE; FILMS;
D O I：
10.1016/j.ceramint.2014.05.112
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mg-substituted NiZnCo ferrite nanopowders, Ni0.5-xZn0.5MgxCo0.1Fe1.9O4 (0 <= x <= 0.20), were synthesized by sol gel auto-combustionmethod. The effect of Mg substitution on the structural and magnetic properties have been investigated. X-ray diffraction and vibrating scanning magnetometer were used to characterize the structural and magnetic properties. XRD revealed single-phase of cubic spinel. Both average crystallite size and lattice parameter increase with increasing Mg substitution. The saturation magnetization initially increases with the increase of Mg substitution when x <= 0.05, and decreases when x > 0.05, which indicates excessive nonmagnetic cations in tetrahedral site will decrease the superexchange interaction between tetrahedral and octahedral sites. The decrease in the coercivity values with increasing Mg substitution indicates the decrease of magnetocrystalline anisotropy energy. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：13917 / 13921
页数：5
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