Recent improvement of hard ferrite permanent magnets based on La-Co substitution

被引：146

作者：

Tenaud, P

Morel, A

Kools, F

Le Breton, JM ^{[1
]}

Lechevallier, L

机构：

[1] Univ Rouen, CNRS, Grp Phys Mat, UMR 6634, F-76801 St Etienne, France

[2] Univ Cergy Pontoise, Lab Phys Mat & Surfaces, F-95031 Cergy Pontoise, France

[3] Carbone Lorraine Ferrites, F-27016 Evreux, France

[4] Carbone Lorraine Ferrites, F-38830 St Pierre D Allevard, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 370卷 / 1-2期

关键词：

SrFe12O19; hexaferrites; La-Co substitution; Mossbauer spectrometry;

D O I：

10.1016/j.jallcom.2003.09.106

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Recent improvements performed on hard ferrite magnets with the Sr1-xLaxFe12-yCo3O19 composition are presented. The influence of the composition on both structural and magnetic properties of samples with y = x and y/x = 0.75 is emphasized. Our investigations have allowed to optimize the permanent magnet properties of La-Co substituted hard ferrite magnets. The optimum composition contains more lanthanum than cobalt at the benefit of both lower irreversible losses and lower raw material costs. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：331 / 334

页数：4

共 15 条

[1]

GROSSINGER R, 2000, P 8 INT C FERR KYOT, P428

[2] LaCo-substituted ferrite magnets, a new class of high-grade ceramic magnets;: intrinsic and microstructural aspects [J].