Structural, magnetic and transport properties of Sr2Fe1-xCrxMoO6-y

被引:59
作者
Blasco, J [1 ]
Ritter, C
Morellon, L
Algarabel, PA
De Teresa, JM
Serrate, D
García, J
Ibarra, MR
机构
[1] Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain
[2] Univ Zaragoza, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
[3] CSIC, E-50009 Zaragoza, Spain
[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
关键词
double perovskites; half-metal; magnetoresistance; rietveld analysis; neutron diffraction; ferrimagnetism;
D O I
10.1016/S1293-2558(02)01309-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The series of Sr2Fe1-xCrxMoO6-y has been synthesized and studied by means of a wide set of experimental techniques. These samples belong to the family of A(2)BB'O-6 double perovskites with a ferrimagnetic ground state. The replacement of Fe by Cr leads to samples with a high oxygen deficiency and to increasing cation disorder between B and B' sites. The magnetic moments of these samples decrease as the iron content does. Electrical properties chance as well strongly along the series: while Sr2FeMoO6 is metallic, the rest of the samples show a semiconducting behavior with an activation energy that increases as the content of Cr does. Only Fe-rich samples exhibit large negative magnetoresistance with the low-field response characteristic of a half-metallic system. The Cr-rich samples display instead a small linear negative magnetoresistance. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
引用
收藏
页码:651 / 660
页数:10
相关论文
共 25 条
[1]   Mossbauer spectroscopy in Sr2FeMoO6 double perovskite [J].
Algarabel, PA ;
Morellon, L ;
De Teresa, JM ;
Blasco, J ;
García, J ;
Ibarra, MR ;
Hernández, T ;
Plazaola, F ;
Barandiarán, JM .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 226 :1089-1091
[2]   B-CATION ARRANGEMENTS IN DOUBLE PEROVSKITES [J].
ANDERSON, MT ;
GREENWOOD, KB ;
TAYLOR, GA ;
POEPPELMEIER, KR .
PROGRESS IN SOLID STATE CHEMISTRY, 1993, 22 (03) :197-233
[3]   Magnetoresistance in the double perovskite Sr2CrMoO6 [J].
Arulraj, A ;
Ramesha, K ;
Gopalakrishnan, J ;
Rao, CNR .
JOURNAL OF SOLID STATE CHEMISTRY, 2000, 155 (01) :233-237
[4]   Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite [J].
Balcells, L ;
Navarro, J ;
Bibes, M ;
Roig, A ;
Martínez, B ;
Fontcuberta, J .
APPLIED PHYSICS LETTERS, 2001, 78 (06) :781-783
[5]   Magnetic properties of the double perovskites A2FeMoO6;: A = Ca, Sr, Ba [J].
Borges, RP ;
Thomas, RM ;
Cullinan, C ;
Coey, JMD ;
Suryanarayanan, R ;
Ben-Dor, L ;
Pinsard-Gaudart, L ;
Revcolevschi, A .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (40) :L445-L450
[6]   Structural phase transition and the electronic and magnetic properties of Sr2FeMoO6 [J].
Chmaissem, O ;
Kruk, R ;
Dabrowski, B ;
Brown, DE ;
Xiong, X ;
Kolesnik, S ;
Jorgensen, JD ;
Kimball, CW .
PHYSICAL REVIEW B, 2000, 62 (21) :14197-14206
[7]  
GALASSO FS, 1969, STRUCTURE PROPERTIES, V5
[8]   Magnetic and magnetotransport properties of the ordered perovskite Sr2FeMoO6 [J].
García-Landa, B ;
Ritter, C ;
Ibarra, MR ;
Blasco, J ;
Algarabel, PA ;
Mahendiran, R ;
García, J .
SOLID STATE COMMUNICATIONS, 1999, 110 (08) :435-438
[9]   SIMPLE WAYS OF DETERMINING PEROVSKITE STRUCTURES [J].
GLAZER, AM .
ACTA CRYSTALLOGRAPHICA SECTION A, 1975, 31 (NOV1) :756-762
[10]   Observation of two time scales in the ferromagnetic manganite La1-xCaxMnO3, x≈0.3 [J].
Heffner, RH ;
Sonier, JE ;
MacLaughlin, DE ;
Nieuwenhuys, GJ ;
Ehlers, G ;
Mezei, F ;
Cheong, SW ;
Gardner, JS ;
Röder, H .
PHYSICAL REVIEW LETTERS, 2000, 85 (15) :3285-3288