Mechanism for Curie temperature variation in LaxSr2-xFeMoO6 and CaxSr2-xFeMoO6

被引：6

作者：

Frontera, C. ^{[1
]}

Rubi, D. ^{[1
]}

Navarro, J. ^{[1
]}

Garcia-Munoz, J. L. ^{[1
]}

Ritter, C. ^{[2
]}

Fontcuberta, J. ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 350卷 / 1-3期

关键词：

Double perovskite; Neutron diffraction; Structural study;

D O I：

10.1016/j.physb.2004.03.071

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By means of high-resolution neutron powder diffraction at 10 K, we have characterized the structural details of La(x)Sr(2-x)FeMoO(6) (0 <= x <= 0.5) and Ca(x)Sr(2-x)FeMoO(6) (0 <= x <= 0.6) series of compounds. The Curie temperature (T(C)) raises in the La series and slightly decreases in the Ca one. The enhancement of T(C) in the La series is attributed to the effect of the conduction band-filling when doping with La. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：E285 / E288

页数：4

共 7 条

[1] Effect of band filling and structural distortions on the Curie temperature of Fe-Mo double perovskites -: art. no. 012412 [J].

Frontera, C ;

Rubi, D ;

Navarro, J ;

García-Muñoz, JL ;

Fontcuberta, J ;

Ritter, C .

PHYSICAL REVIEW B, 2003, 68 (01)

[2] Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure [J].

Kobayashi, KL ;

Kimura, T ;

Sawada, H ;

Terakura, K ;

Tokura, Y .

NATURE, 1998, 395 (6703) :677-680

[3] Raising the Curie temperature in Sr2FeMoO6 double perovskites by electron doping -: art. no. 092411 [J].

Navarro, J ;

Frontera, C ;

Balcells, L ;

Martínez, B ;

Fontcuberta, J .

PHYSICAL REVIEW B, 2001, 64 (09)

[4]

NAVARRO J, 2003, ARXIVCONDMAT0303464

[5] Electronic and magnetic structures of Sr2FeMOO6 -: art. no. 097204 [J].

Ray, S ;

Kumar, A ;

Sarma, DD ;

Cimino, R ;

Turchini, S ;

Zennaro, S ;

Zema, N .

PHYSICAL REVIEW LETTERS, 2001, 87 (09) :art. no.-097204

[6] RECENT ADVANCES IN MAGNETIC-STRUCTURE DETERMINATION BY NEUTRON POWDER DIFFRACTION [J].

RODRIGUEZCARVAJAL, J .

PHYSICA B, 1993, 192 (1-2) :55-69

[7] Large low-field magnetoresistance and TC in polycrystalline (Ba0.8Sr0.2)2-xLaxFeMoO6 double perovskites [J].

Serrate, D ;

De Teresa, JM ;

Blasco, J ;

Ibarra, MR ;

Morellón, L ;

Ritter, C .

APPLIED PHYSICS LETTERS, 2002, 80 (24) :4573-4575

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