Effect of grain boundary on electrical properties of polycrystalline lanthanum nickel oxide thin films

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	Effect of grain boundary on electrical properties of polycrystalline lanthanum nickel oxide thin films
	M. W. Zhu; Z. J. Wang; Y. N. Chen; H. L. Wang; Z. D. Zhang
	2013
发表期刊	Applied Physics a-Materials Science & Processing
ISSN	0947-8396
卷号	112 期号:4 页码:1011-1018
摘要	In the present work, lanthanum nickel oxide (LNO) thin films were prepared by the sol-gel method. Microstructures of the films were tailored by changing sol concentration so as to investigate the effect of grain boundary on the transport properties of electrons in the polycrystalline LNO films. Based on the temperature dependence of the resistivity and the magnetic field dependence of the magnetoresistance (MR) at various temperatures, the factors that dominate the transport behavior in the polycrystalline LNO films were explored in terms of weak localization and strong localization. The results show that the grain boundary has a significant influence on the transport behavior of the electrons in LNO films at a low-temperature region, which can be captured by a variable-range hopping (VRH) model. The increase of metal-insulator (M-I) transition temperature is ascribed to Anderson localization in grain boundary. At a high-temperature region, electron-electron scattering and electron-phonon scattering predominates in the films. In this case, the existence of more grain boundary shows a minor effect on the transport behavior of the electrons but elevates the residual resistivity of the films.
部门归属	[zhu, m. w. ; wang, z. j. ; chen, y. n. ; wang, h. l. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; wang, zj (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china. ; wangzj@imr.ac.cn
关键词	Chemical Solution Deposition Sol-gel Method Lanio3 Electrode Microstructure Conduction Silicon
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71748
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. W. Zhu,Z. J. Wang,Y. N. Chen,et al. Effect of grain boundary on electrical properties of polycrystalline lanthanum nickel oxide thin films[J]. Applied Physics a-Materials Science & Processing,2013,112(4):1011-1018.
APA	M. W. Zhu,Z. J. Wang,Y. N. Chen,H. L. Wang,&Z. D. Zhang.(2013).Effect of grain boundary on electrical properties of polycrystalline lanthanum nickel oxide thin films.Applied Physics a-Materials Science & Processing,112(4),1011-1018.
MLA	M. W. Zhu,et al."Effect of grain boundary on electrical properties of polycrystalline lanthanum nickel oxide thin films".Applied Physics a-Materials Science & Processing 112.4(2013):1011-1018.