Structure and magnetic properties of Ni0.7Mn0.3Fe2O4 nanoparticles doped with La2O3

被引：21
|
作者：
Zhao, LJ
Yang, H [1 ]
Yu, LX
Sun, W
Cui, YM
Yan, Y
Feng, SH
机构：
[1] Jilin Univ, Coll Chem, Changchun 130023, Peoples R China
[2] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China
[3] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2004年 / 201卷 / 14期
关键词：
D O I：
10.1002/pssa.200406856
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ni0.7Mn0.3LaxFe2-xO4 (x = 0, 0.04, 0.06, 0.08, 0.1) ferrite powders with nanosize well-developed spinel phases were prepared by the emulsion method. The growth of particles, the structure and the magnetic properties were investigated by X-ray diffraction (XRD), Mossbauer spectroscopy and a vibrating sample magnetometer (VSM). Furthermore, the influence of La2O3 on the magnetic properties of N0.7Mn0.3LaxFe2-xO4 ferrites powders has been investigated extensively. Experimental results show that La3+-doped Ni0.7Mn0.3Fe2O4 ferrites have higher special saturation magnetization M-s than that of Ni0.7Mn0.3Fe2O4 ferrite when sintered at 900 degreesC. Ni0.7Mn0.3La0.06Fe1.94O4 ferrite nanoparticle with particle size of 11 nm has superparamagnetic.
引用
收藏
页码：3121 / 3128
页数：8
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