Electrical Transport Properties in La0.7Ca0.3-xSrxMnO3 Thin Films

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 无机功能材料与器件重点实验室 > 期刊论文

	Electrical Transport Properties in La0.7Ca0.3-xSrxMnO3 Thin Films
	Zhang Yuan-Yuan 1; Tang Xiao-Dong 1; Chen Ying 2; Wang Gen-Shui 2; Dong Xian-Lin 2
刊名	JOURNAL OF INORGANIC MATERIALS
	2016-03-20
卷号	31 期号:3 页码:274-278
关键词	manganese oxides Sol-Gel method transport properties
英文摘要	The influence of the chemical composition on the structure, magnetic and electrical transport properties of La0.7Ca0.3-xSrxMnO3 (LCSMO, x <= 0.05) thin films was systematically studied. LCSMO thin films were prepared by Sol-Gel method. XRD results show that all the films have typical perovskite structure. With increase of Sr doping concentration, both Curie temperature T-C and metal-insulator transition temperature T-MI of LCSMO thin films increase monotonously. When Sr doping concentration x <= 0.05, with increase of temperature, absolute value of MR decreases first, then increases to a maximum value around T-MI, and finally decreases, which indicates that the disorder coming from phase separation around T-MI contributes greatly to MR. The field dependence of MR values at certain temperature can be classified into two kinds. When the temperature is much lower than T-MI, dual gradient of MR with the magnetic field is shown. The tunneling effect on the grain boundaries plays a dominant part in the low magnetic field, and this effect is particularly sensitive to the magnetic field; the suppression of spin fluctuations by magnetic field is the main reason in the high magnetic field range. When the temperature is higher than T-MI, MR of LCSMO thin films changes almost linearly with the magnetic field which is mainly due to suppression of spin fluctuations by magnetic field.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Ceramics
研究领域[WOS]	Materials Science
关键词[WOS]	MAGNETORESISTANCE ; MANGANITES
收录类别	SCI
语种	英语
WOS记录号	WOS:000370927000008
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23201]
专题	上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文
作者单位	1.E China Normal Univ, Sch Informat Sci Technol, Shanghai 200241, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Zhang Yuan-Yuan,Tang Xiao-Dong,Chen Ying,et al. Electrical Transport Properties in La0.7Ca0.3-xSrxMnO3 Thin Films[J]. JOURNAL OF INORGANIC MATERIALS,2016,31(3):274-278.
APA	Zhang Yuan-Yuan,Tang Xiao-Dong,Chen Ying,Wang Gen-Shui,&Dong Xian-Lin.(2016).Electrical Transport Properties in La0.7Ca0.3-xSrxMnO3 Thin Films.JOURNAL OF INORGANIC MATERIALS,31(3),274-278.
MLA	Zhang Yuan-Yuan,et al."Electrical Transport Properties in La0.7Ca0.3-xSrxMnO3 Thin Films".JOURNAL OF INORGANIC MATERIALS 31.3(2016):274-278.