Fabrication and magnetic investigation of Y or Gd containing CoFe2O4 nanocrystalline films

被引：27

作者：

Yan, CH ^{[1
]}

Cheng, FX ^{[1
]}

Peng, ZY ^{[1
]}

Xu, ZG ^{[1
]}

Liao, CS ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat chem & Applicat, Beijing 100871, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 84卷 / 10期

关键词：

D O I：

10.1063/1.368834

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The exertion for carrying out the substitution of Fe3+ ion in CoFe2O4 spinel by Y3+ and Gd3+ ions has been put forth in the present article. Y or Gd containing CoFe2O4 nanocrystalline films with average particles size of 65 nm were synthesized by sol-gel method, and then the magnetic properties of the products were investigated at room temperature. To improve the crystallization of Gd-doped cobalt spinels, we buffered them on about a 20-nm-thick CoFe2O4 thin film. However, the analysis on the results for both x-ray diffraction and magnetic measurement showed that it is difficult to perform the doping of Y3+ ions inside cobalt spinel ferrite. The proper doping amount of magnetic Gd3+ ion can enlarge saturation magnetization (M-s ) and coercive force (H-c)of resultant nanocrystalline films, whereas the doping of Y only reduces them. (C) 1998 American Institute of Physics. [S0021-8979(98)06022-8].

引用

页码：5703 / 5708

页数：6

共 32 条

[1] MAGNETO-OPTIC KERR EFFECT IN COFE2-XMXO4(M=MN,CR,AL) AND BAFE12-2X-COXTIXO19 WITH TETRAHEDRALLY COORDINATED CO2+ [J].