Influence of a site local moments on ferromagnetic transition temperature in perovskite manganates

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	Influence of a site local moments on ferromagnetic transition temperature in perovskite manganates
	J. Xu; W. H. Tang; J. K. Liang
	1997
发表期刊	Solid State Communications
ISSN	0038-1098
卷号	104 期号:11 页码:713-716
摘要	Substantial effect of A site local moment exhibited by rare earth ions on the ferromagnetic transition temperature T-c is presented through comparative study of two series of samples, i.e. (La1-ySmy)(1/3)Nd1/3Sr1/3MnO3 and La1/3Nd1/3(Ca1-xSrx)(1/3)MnO3 in which x and y are chosen to make the respective samples have the same average A site ionic radius (r(A)) It is found that, contrary to the prediction of the established T-c similar to [r(A)] phase diagram, for the two samples with the same [r(A)] the one with Sm substitution exhibits lower T-c than its counterpart with Ca substitution and the difference increases with Sm content. The result suggests that A site local moments weaken the double exchange interaction, hence reduce T-c. Possible reasons are discussed. (C) 1997 Published by Elsevier Science Ltd.
部门归属	chinese acad sci,ctr condensed matter phys,beijing 100080,peoples r china. acad sinica,int ctr mat phys,shenyang 110015,peoples r china.;xu, j (reprint author), chinese acad sci,inst phys,pob 603,beijing 100080,peoples r china
关键词	Magnetically Ordered Materials Exchange And superExchange Giant Magnetoresistance Films
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38160
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Xu,W. H. Tang,J. K. Liang. Influence of a site local moments on ferromagnetic transition temperature in perovskite manganates[J]. Solid State Communications,1997,104(11):713-716.
APA	J. Xu,W. H. Tang,&J. K. Liang.(1997).Influence of a site local moments on ferromagnetic transition temperature in perovskite manganates.Solid State Communications,104(11),713-716.
MLA	J. Xu,et al."Influence of a site local moments on ferromagnetic transition temperature in perovskite manganates".Solid State Communications 104.11(1997):713-716.