| Structural Analysis and Magnetic Properties of Gd-Doped Li-Ni Ferrites Prepared Using Rheological Phase Reaction Method |
| |
| 作者姓名： | 蒋静 李良超 徐烽 |
| |
| 作者单位： | Department of Chemistry, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China |
| |
| 基金项目： | Project supported by the Natural Science Foundation of China （Y405038） and Science and Technology Key Project of Zhejiang Province （2006C21080） |
| |
| 摘 要： | A series of Gd-doped Li-Ni ferrites with the formula of LiNi0.5GdxFe2-xO4 where x = 0.00 - 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 - 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.
|
| 关 键 词： | 流变学相反应法 锂镍铁素体 钆掺杂 结构分析 磁性 |
| 文章编号： | 1002-0721（2007）01-0079-05 |
| 收稿时间： | 26 April 2006 |
| 修稿时间： | 2006-04-262006-10-20 |
Structural Analysis and Magnetic Properties of Gd-Doped Li-Ni Ferrites Prepared Using Rheological Phase Reaction Method |
| |
| Jiang , Li Liangchao,Xu Feng.Structural Analysis and Magnetic Properties of Gd-Doped Li-Ni Ferrites Prepared Using Rheological Phase Reaction Method[J].Journal of Rare Earths,2007,25(1):79-83. |
| |
| Authors: | Jiang Li Liangchao Xu Feng |
| |
| Affiliation: | Department of Chemistry, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China |
| |
| Abstract: | A series of Gd-doped Li-Ni ferrites with the formula of LiNi0.5GdxFe2-xO4 where x=0.00～0.08 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=0.00～0.04. 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 (GdFeO3). 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. |
| |
| Keywords: | rheological phase Li-Ni ferrite Gd-doped structure magnetic properties rare earths |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
