Mossbauer studies for La-Co substituted strontium ferrite

被引：30

作者：

Choi, Dong Hyeok ^{[1
]}

Lee, Sang Won ^{[1
]}

Shim, In-Bo ^{[1
]}

Kim, Chul Sung ^{[1
]}

机构：

[1] Kookmin Univ, Dept Phys, Seoul 136702, South Korea

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 304卷 / 01期

关键词：

Sr ferrite; Mossbauer; Site occupancy;

D O I：

10.1016/j.jmmm.2006.01.151

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

La-Co substituted Sr ferrite (La-Co)(x)Sr-1 Fe-x(12) O-x(19) (x = 00-0.4) powders synthesized by sol-gel process were investigated for their magnetic properties. The crystalline structures were characterized by X-ray diffractometer (XRD), and magnetic properties were measured by vibrating sample magnetometer (VSM) and Mossbauer spectrometer. The crystalline structure of (La-Co)(x)Sr1-xFe12-xO19 (x = 0.0-0.4) was single M-type hexagonal phase. Magnetization under an applied maximum field of 15 kOe was measured 63.9 emu/g for x = 0.0, and decreased gradually for x = 0.2, and increased slightly over x = 0.2. Coercivity, H-C, measured 7.5 kOe of maximum value for x = 0.2. With increasing x, we interpret that it is closely related to La-Co occupation of 4f(2) and 12k sites from the analysis of Mossbauer spectra. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：E243 / E245

页数：3

共 11 条

[1] Mossbauer and magnetic properties of Co-Ti substituted barium hexaferrite nanoparticles [J].