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
	2009
发表期刊	Physical Review B
ISSN	1098-0121
卷号	79 期号:22
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.
部门归属	[zhang, y. q.; zhang, z. d.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zhang, y. q.; zhang, z. d.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [zhang, y. q.; aarts, j.] leiden univ, kamerlingh onnes lab, nl-2300 ra leiden, netherlands.;zhang, yq (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
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
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32586
专题	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).