Cation order enhancement in Sr2FeMoO6 by water-saturated hydrogen reduction

被引：16

作者：

Calleja, Alberto ^{[1
,2
]}

Capdevila, Xavier G. ^{[3
]}

Segarra, Merce ^{[3
]}

Frontera, Carles

Espiell, Ferran ^{[3
]}

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain

[2] Univ Autonoma Barcelona, Inst Ciencia & Tecnol Ambientals, Bellaterra 08193, Spain

[3] Univ Barcelona, Fac Quim, DIOPMA, Dept Ciencia Mat & Engn Met, E-08028 Barcelona, Spain

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2011年 / 31卷 / 1-2期

关键词：

Sol-gel processes; Microstructure final; Magnetic properties; Perovskites SFMO; DOUBLE-PEROVSKITE; ROOM-TEMPERATURE; MAGNETORESISTANCE; MAGNETIZATION; GEL; DEPOSITION; STABILITY; FE/MO; FILM;

D O I：

10.1016/j.jeurceramsoc.2010.08.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Sr2FeMoO6 (SFMO) double perovskite has been prepared from powders obtained by the polyacrylamide gel combustion synthesis After removing organic residues the precursor powder consists of a homogeneous submicronic blend of SrFeO3-x and SrMoO4 In order to crystallize SFMO an experimental setup consisting of injecting water-saturated Ar/5%H-2 gas flow in a crucible was used Results show that a high saturation magnetization of 3 9 mu(B)/formula unit, which accounts for 98% of the theoretical value, and Curie temperature of 415 K can be achieved in this way The Fe/Mo order was 98% by Rietveld refinement of best sample Furthermore no metallic iron was detected, even at long reducing treatments Lowering the reducing power of hydrogen with water is believed to be the main reason for improved synthesis (C) 2010 Elsevier Ltd All rights reserved

引用

页码：121 / 127

页数：7

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