Structural analysis and magnetic properties of Gd-doped Li-Ni ferrites prepared using rheological phase reaction method

被引:0
作者
Jiang Jing [1 ]
Li Liangchao [1 ]
Xu Feng [1 ]
机构
[1] Zhejiang Normal Univ, Inst Phys Chem, Dept Chem, Jinhua 321004, Peoples R China
关键词
rheological phase; Li-Ni ferrite; Gd-doped; structure; magnetic properties; rare earths;
D O I
暂无
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A series of Gd-doped Li-Ni ferrites with the formula of LiNi0.5GdxFe2-xO4 where x = 0.00 similar to 0.08 in steps of 0.02, were prepared by thermolysis of oxalate precursors obtained by rheological phase reaction. The structure, morphology, and the magnetic properties of the samples were characterized by powder X-ray diffraction (XRD), atomic force microscopy (AFM) and a vibrating sample magnetometer (VSM). A single spinel phase was obtained in the range of x = 0.00 similar to 0.04. The lattice parameters of the Gd-doped samples were larger than that of pure Li-Ni ferrite, and increased in the range of 0.00 <= x <= 0.04, then decreased up to x = 0.08, because of the formation of the secondary phase (Gd-FeO3). All samples were spheric particles with an average size of about 100 nm, but agglomerated to some extent. The hysteresis loops indicated that the saturation magnetization decreased gradually with increasing Gd content, while the variation of coercivity was related to the microstructure of the Gd-doped samples.
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收藏
页码:79 / 83
页数:5
相关论文
共 20 条
[1]   X-RAY-DIFFRACTION STUDY OF THE CATION DISTRIBUTION IN THE MN-ZN-FERRITES [J].
ABBAS, T ;
KHAN, Y ;
AHMAD, M ;
ANWAR, S .
SOLID STATE COMMUNICATIONS, 1992, 82 (09) :701-703
[2]   Structural and electrical studies on La3+ substituted Ni-Zn [J].
Ahmed, MA ;
Ateia, E ;
Salah, LM ;
El-Gamal, AA .
MATERIALS CHEMISTRY AND PHYSICS, 2005, 92 (2-3) :310-321
[3]   Rare earth doping effect on the structural and electrical properties of Mg-Ti ferrite [J].
Ahmed, MA ;
Ateia, E ;
El-Dek, SI .
MATERIALS LETTERS, 2003, 57 (26-27) :4256-4266
[4]   Mossbauer and X-ray studies for Ni0.2ZnxMg0.8-xFe2O4 ferrites [J].
Amer, MA ;
El Hiti, M .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 234 (01) :118-125
[5]  
CAHN RW, 1985, PHYS METALLURGY M, P184
[6]   Studies of AC electrical conductivity and initial magnetic permeability of rare-earth-substituted Li-Co ferrites [J].
El Ata, AMA ;
El Nimr, MK ;
Attia, SM ;
El Kony, D ;
Al-Hammadi, AH .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 297 (01) :33-43
[7]   Structural and magnetic properties of Zn substituted Li-Cu ferrites [J].
Jadhav, SA .
MATERIALS CHEMISTRY AND PHYSICS, 2000, 65 (01) :120-123
[8]  
Jiang S, 2005, J RARE EARTH, V23, P20
[9]  
Jiao MC, 2004, J RARE EARTH, V22, P67
[10]   Synthesis and magnetic properties of CoFe2O4 spinel ferrite nanoparticles doped with lanthanide ions [J].
Kahn, ML ;
Zhang, ZJ .
APPLIED PHYSICS LETTERS, 2001, 78 (23) :3651-3653