Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6

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	Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6
	Q. Zhang; G. H. Rao; Y. G. Xiao; H. Z. Dong; G. Y. Liu; Y. Zhang; J. K. Liang
	2006
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	381 期号:1-2 页码:233-238
摘要	Crystal structure, magnetic and electrical-transport properties of the rare-earth-doped compounds (Sr(1.85)Ln(0.15))FeMoO6 (Ln = Sr, La, Ce, Pr, Nd, Sin and Eu) have been investigated by means of X-ray diffraction, magnetic and electric measurements. All the samples are single phase and belong to the I4/m space group. Due to the competing contributions of electron doping and steric effects, the unit-cell volume of the doped compounds changes slightly and does not vary systematically with the ionic radius of the rare-earth ions. The temperature dependence of the magnetization of (Sr(1.85)Ln(0.15))FeMoO6 indicates that the Curie temperature of the doped compounds has increased upon doping, except for the Eu-doped compound. The saturation magnetization of the compounds at 5 K cannot be explained simply by considering the ferrimagnetic arrangement of the magnetic sublattices of Fe and Mo because of the magnetic contribution of rare-earth ions. However, the saturation magnetization at 100 K of the doped compounds exhibits a linear decrease with the increase of the anti-site defect concentration. Comparison of the saturation magnetization of the compounds at 5 and 100 K suggests that at 5 K the magnetic moments of Ce, Pr, Nd and Sin align parallel with that of Fe, while the magnetic moment of Eu is anti-parallel with that of Fe. The normalized resistivities of the parent and the La- and Sm-doped compounds exhibit a semiconductor-metal transition, while the Pr-, Nd- and Eu-doped compounds exhibit semiconducting behavior. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china. univ qinghai, xining 810016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;rao, gh (reprint author), chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china;ghrao@aphy.iphy.ac.cn
关键词	Double Perovskite Electron Doping Saturation Magnetization Degree Of Ordering Double-perovskite Sr2femoo6 Low-field Magnetoresistance Electronic-properties Temperature Transition Disorder Oxide
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WOS记录号	WOS:000238664400039
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34702
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Zhang,G. H. Rao,Y. G. Xiao,et al. Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6[J]. Physica B-Condensed Matter,2006,381(1-2):233-238.
APA	Q. Zhang.,G. H. Rao.,Y. G. Xiao.,H. Z. Dong.,G. Y. Liu.,...&J. K. Liang.(2006).Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6.Physica B-Condensed Matter,381(1-2),233-238.
MLA	Q. Zhang,et al."Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6".Physica B-Condensed Matter 381.1-2(2006):233-238.