Charge-order melting and magnetic phase separation in thin films of Pr(0.7)Ca(0.3)MnO(3)

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	Charge-order melting and magnetic phase separation in thin films of Pr(0.7)Ca(0.3)MnO(3)
	Y. Q. Zhang ; Z. D. Zhang ; J. Aarts
刊名	Physical Review B
	2009
卷号	79 期号:22
关键词	annealing calcium compounds charge-ordered states exchange interactions (electron) magnetic thin films magnetic transitions magnetisation melting metal-insulator transition phase separation praseodymium compounds stress relaxation
ISSN号	1098-0121
中文摘要	We investigate the effect of strain on the phenomenon of charge-order melting, that is the transformation of a charge-ordered insulating state to a metallic state under the influence of a magnetic field (the melting field) in thin films of Pr(0.7)Ca(0.3)MnO(3) grown on various substrates. We find that unstrained films grown on SrLaGaO(4) behave quite similar to bulk material, but that strained films grown on SrTiO(3) and NdGaO(3) show hugely increased melting fields. Strain relaxation by postannealing again leads to bulklike behavior. In this material the antiferromagnetic charge-order phase can coexist with a ferromagnetic insulating state. Magnetization measurements, where we demonstrate the presence of exchange bias effects, show that this is also the case in the strained films. We argue that the phase mixture in the strained films is more difficult to melt than in the unstrained case.
原文出处	://WOS:000267699300075
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32586]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Q. Zhang,Z. D. Zhang,J. Aarts. Charge-order melting and magnetic phase separation in thin films of Pr(0.7)Ca(0.3)MnO(3)[J]. Physical Review B,2009,79(22).
APA	Y. Q. Zhang,Z. D. Zhang,&J. Aarts.(2009).Charge-order melting and magnetic phase separation in thin films of Pr(0.7)Ca(0.3)MnO(3).Physical Review B,79(22).
MLA	Y. Q. Zhang,et al."Charge-order melting and magnetic phase separation in thin films of Pr(0.7)Ca(0.3)MnO(3)".Physical Review B 79.22(2009).