Magnetic properties of the double perovskites A(2)FeMoO(6); A = Ca, Sr, Ba

Authors
Borges, RP Thomas, RM Cullinan, C Coey, JMD Suryanarayanan, R Ben-Dor, L Pinsard-Gaudart, L Revcolevschi, A
Citation
Rp. Borges et al., Magnetic properties of the double perovskites A(2)FeMoO(6); A = Ca, Sr, Ba, J PHYS-COND, 11(40), 1999, pp. L445-L450
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
11
Issue
40
Year of publication
1999
Pages
L445 - L450
Database
ISI
SICI code
0953-8984(19991011)11:40<L445:MPOTDP>2.0.ZU;2-M
Abstract
The double-perovskite oxides Ca2FeMoO6, Sr2FeMoO6 and Ba2FeMoO6 show eviden ce of ferromagnetic metallic behaviour, with Curie temperatures of 345-426 K and saturation magnetization of 3.5-3.9 mu(B) /formula unit. Ceramics sho w little anisotropic magnetoresistance, but the low-held isotropic negative magnetoresistance of Sr2FeMoO6 is 7% in 1 T at room temperature and reache s 15% at 77 K. An effect of about 1% is found in 20 mT at room temperature in both ceramics and pressed powders of this compound.