Fabrication of polycrystalline La-0.67(Sr1-xCdx)(0.33)MnO3 thin films on Si(100) substrates by sol-gel process

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	Fabrication of polycrystalline La-0.67(Sr1-xCdx)(0.33)MnO3 thin films on Si(100) substrates by sol-gel process
	Z. L. Liu ; J. Zhang ; K. L. Yao ; H. R. Liu ; L. H. Jia ; H. G. Cheng
刊名	Journal of Sol-Gel Science and Technology
	2007
卷号	43 期号:1 页码:93-97
关键词	sol-gel polycrystalline low-field magnetoresistance grain boundaries transport-properties electrical-properties magnetoresistance perovskites growth oxide size mn la
ISSN号	0928-0707
中文摘要	Polycrystalline La-0.67 (Sr1-x Cd (x) )(0.33)MnO3 (LSCMO x = 0, 1/8, 2/8, 3/8, 4/8) films were fabricated on Si(100) single crystal substrates by the sol-gel and the rapid annealing process. According to the field-emission scan electron microscopy (FE-SEM) observation and X-ray (XRD) diffraction studies, all the samples are single phase. We also prepared a series of samples by fixing the ratio of La at 0.67. It is shown that with increase of the doping amount x in La-0.67(Sr1-x Cd (x) )(0.33)MnO3, the average A-site cation radius < A > decreases, the temperature of metal-insulator transition (T-MI) decreases monotonically, rho and magnetoresistance (MR) values increase dramatically, which can be explained by the lattice effects. The enhanced MR effect at low temperature for the LSCMO film is attributed to the suppression of the spin dependent scattering of polarized electrons at the grain boundaries. The low-field magnetoresistance values under 0.3 T are observed to be 2.48% (x = 0) at 300 K and 37.5% (x = 4/8) at 85 K, respectively.
原文出处	://WOS:000247194300014
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/33726]
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	Z. L. Liu,J. Zhang,K. L. Yao,et al. Fabrication of polycrystalline La-0.67(Sr1-xCdx)(0.33)MnO3 thin films on Si(100) substrates by sol-gel process[J]. Journal of Sol-Gel Science and Technology,2007,43(1):93-97.
APA	Z. L. Liu,J. Zhang,K. L. Yao,H. R. Liu,L. H. Jia,&H. G. Cheng.(2007).Fabrication of polycrystalline La-0.67(Sr1-xCdx)(0.33)MnO3 thin films on Si(100) substrates by sol-gel process.Journal of Sol-Gel Science and Technology,43(1),93-97.
MLA	Z. L. Liu,et al."Fabrication of polycrystalline La-0.67(Sr1-xCdx)(0.33)MnO3 thin films on Si(100) substrates by sol-gel process".Journal of Sol-Gel Science and Technology 43.1(2007):93-97.