Application of FORC distributions to the study of magnetic interactions in ferrites of composition Ba1-xLax+δFe12-xCoxO19

被引：21

作者：

Oliva, M. I. ^{[1
]}

Bercoff, P. G. ^{[1
]}

Bertorello, H. R. ^{[1
]}

机构：

[1] Univ Nacl Cordoba, Fac Mat Astronm & Fis, RA-5000 Cordoba, Argentina

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 14期

关键词：

hexaferrite; La-Co substitution; FORC distribution;

D O I：

10.1016/j.jmmm.2008.02.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic interactions in hexaferrite samples of Ba1-xLax+delta Fe12-xCoxO19 composition were studied. The precursor powders-barium carbonate (BaCO3), lanthanum oxide (La2O3), hematite (Fe2O3) and cobalt acetate-were milled for 100 h in air atmosphere and heat-treated for 1 h at 1000 degrees C. The structural characterization was performed by X-ray diffraction. The FORC distributions show a single peak at high switching fields, indicating that the substituted systems are formed by weakly interacting particles. La excess induces the decoupling of the particles. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：E100 / E103

页数：4