Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite
作者： M. Bibes , J. Fontcuberta , A. Roig , Ll. Balcells , J. Navarro
DOI: 10.1063/1.1346624
关键词: Ion 、 Mössbauer spectroscopy 、 Magnetoresistance 、 Double perovskite 、 Magnetization 、 Condensed matter physics 、 Mössbauer effect 、 Chemistry 、 Charge density 、 Cationic polymerization
摘要: The role of the synthesis conditions on cationic Fe/Mo ordering in Sr2FeMoO6 double perovskite is addressed. It shown that this can be controlled and varied systematically. has a profound impact saturation magnetization material. Using appropriate protocol value 3.7 μB been obtained. Mossbauer analysis reveals existence two distinguishable Fe sites charge density at Fem+ ions significantly larger than 3d5 suggesting contribution to spin-down conduction band. implications these findings for having optimal magnetoresistance response are discussed.
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