Mossbauer investigation of Sr1-xLaxFe12-yCOyO19 ferrites

被引：75

作者：

Lechevallier, L

Le Breton, JM ^{[1
]}

Teillet, J

Morel, A

Kools, F

Tenaud, P

机构：

[1] Univ Rouen, UMR 6634 CNRS, Grp Phys Mat, 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 dAllevard, France

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 327卷 / 2-4期

关键词：

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

D O I：

10.1016/S0921-4526(02)01712-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Sr1-xLaxFe12-yCOyO19 powders with y/x = 0.75 and x = 0.1, 0.2, 0.3, 0.4 were prepared according to a ceramic process. X-ray diffraction analysis shows that all the powders are of single, hexagonal M-type, phase. The Mossbauer investigation confirms that CO2+ substitutes for Fe3+ in both 4f(2), (mainly) and 2a sites. The most important hyperfine parameters changes concern the 12k, 42 and 2b sites and are related to both CO2+/Fe3+ and La3+/Sr2+ substitution effects. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 139

页数：5

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