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	Structural and magnetic properties of sr2fe1-xgaxmoo6 (0 <= x <= 0.25)
	Min Feng Lu; Jing Ping Wang; Jian Fen Liu; Wei Song; Xian Feng Hao; De Feng Zhou; Xiao Juan Liu; Zhi Ran Wu; Jian Meng
刊名	Journal of alloys and compounds
	2007-01-31
卷号	428期号:1-2页码:214-219
关键词	Transition metal compounds Oxide materials Crystal structure Magnetic measurements
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2006.01.112
通讯作者	Jian meng(jmeng@ciac.jl.cn)
英文摘要	We have investigated the structure, magnetization and magnetoresistance (mr) of the double perovskite compounds sr2fe1-xgaxmoo6 (0 <= x <= 0.25). rietveld refinement results show that the anti-site defects (asds) concentration increases with x, giving rise to highly disordered samples at the b/b' positions, for the highest doping levels. the evolution of bond lengths and ions oxidation states could be understood by the distribution of trivalent ga ions at the b/b' positions, which leads to the formation of more disorder structure. the saturation magnetization and curie temperature decreased with the ga content increases in the samples, and their origin was found that the cations disorder for the ga-doped compounds is annihilating double exchange mechanism due to the presence of significant amounts of fe and ga cations on the b' site. the low-field magnetoresistance of sr2femoo6 (sfmo) can be greatly enhanced by replacing the fe by the nonmagnetic ga ion up to a temperature of 300 k, since ga ions may act as a barrier for electron transport along the chain in the ferromagnetic segregation and weaken the ferromagnetic exchange. (c) 2006 published by elsevier b.v.
WOS关键词	LOW-FIELD MAGNETORESISTANCE ; SR2FEMOO6 DOUBLE PEROVSKITE ; NEUTRON-DIFFRACTION ; POWDER DIFFRACTION ; SERIES
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000243736200035
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2380769
专题	中国科学院大学
通讯作者	Jian Meng
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China 2.Tianjin Univ, Anal Ctr, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Min Feng Lu,Jing Ping Wang,Jian Fen Liu,et al. Structural and magnetic properties of sr2fe1-xgaxmoo6 (0 <= x <= 0.25)[J]. Journal of alloys and compounds,2007,428(1-2):214-219.
APA	Min Feng Lu.,Jing Ping Wang.,Jian Fen Liu.,Wei Song.,Xian Feng Hao.,...&Jian Meng.(2007).Structural and magnetic properties of sr2fe1-xgaxmoo6 (0 <= x <= 0.25).Journal of alloys and compounds,428(1-2),214-219.
MLA	Min Feng Lu,et al."Structural and magnetic properties of sr2fe1-xgaxmoo6 (0 <= x <= 0.25)".Journal of alloys and compounds 428.1-2(2007):214-219.

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