Influence of doping Al at Fe site on the magnetic structure and magnetotransport properties of Sr2FeMoO6

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	Influence of doping Al at Fe site on the magnetic structure and magnetotransport properties of Sr2FeMoO6
	X. J. Wang; Y. Sui; Z. N. Qian; Z. G. Liu; J. P. Miao; X. Q. Huang; Z. Lu; R. B. Zhu; J. G. Cheng; W. H. Su
	2006
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	55 期号:2 页码:849-853
摘要	Double perovskite Sr2FeMoO6 with Al doping at Fe site up to 30% were prepared by traditional solid-state reaction. The degree of the cation ordering of Sr2FeMoO6 increases with Al doping obviously as shown by the refinement of room-temperature Xray diffraction. The saturated magnetic moment per formula unit of these compounds decreases gradually with increasing Al concentration, but the magnetic moment per Fe ion increases markedly, which is consistent with the improvement of cation ordering. Basing on the analysis of magnetic structure with Al doping, doping of Al will lead to the formation of non-magnetic coupled Mo-O-Al-O-Mo chains, which can divide the large Mo-O-Fe ferrimagnetic region into smaller patches and enhance the low Field magnetoresistance. The formation of Fe-O-Fe antiphase boundaries are suppressed by the doping Al due to the improvement of the cation ordering, and the high field magnetoresistance that roots in spin-dependent scattering at the antiphase boundaries is reduced. Therefore, the total magnetoresistance reaches a maximum value at x = 0.15.
部门归属	harbin inst technol, dept appl phys, ccmst, harbin 150001, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;su, wh (reprint author), harbin inst technol, dept appl phys, ccmst, harbin 150001, peoples r china;suiyu@hit.edu.cn
关键词	Sr2femoo6 Doping Magnetic Structure Magnetotransport Double-perovskite Sr2femoo6 Low-field Magnetoresistance Transport-properties Disorder Crystal
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WOS记录号	WOS:000235423300067
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34530
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. J. Wang,Y. Sui,Z. N. Qian,et al. Influence of doping Al at Fe site on the magnetic structure and magnetotransport properties of Sr2FeMoO6[J]. Acta Physica Sinica,2006,55(2):849-853.
APA	X. J. Wang.,Y. Sui.,Z. N. Qian.,Z. G. Liu.,J. P. Miao.,...&W. H. Su.(2006).Influence of doping Al at Fe site on the magnetic structure and magnetotransport properties of Sr2FeMoO6.Acta Physica Sinica,55(2),849-853.
MLA	X. J. Wang,et al."Influence of doping Al at Fe site on the magnetic structure and magnetotransport properties of Sr2FeMoO6".Acta Physica Sinica 55.2(2006):849-853.