Effect of YBa2Cu3O7-delta film thickness on the dielectric properties of Ba0.1Sr0.9TiO3 in Ag/Ba0.1Sr0.9TiO3/YBa2Cu3O7-delta/LaAlO3 multilayer structures

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	Effect of YBa2Cu3O7-delta film thickness on the dielectric properties of Ba0.1Sr0.9TiO3 in Ag/Ba0.1Sr0.9TiO3/YBa2Cu3O7-delta/LaAlO3 multilayer structures
	Zhu, XH ; Peng, W ; Li, J ; Chen, YF ; Tian, HY ; Xu, XP ; Zheng, DN
刊名	JOURNAL OF APPLIED PHYSICS
	2005
卷号	97 期号:1
关键词	STRONTIUM-TITANATE FILMS SRTIO3 THIN-FILMS HETEROSTRUCTURES TUNABILITY INTERFACE
ISSN号	0021-8979
通讯作者	Zhu, XH: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China.
中文摘要	Ferroelectric and superconductor bilayers of Ba0.1Sr0.9TiO3 (BSTO)/YBa2Cu3O7-delta (YBCO), with different YBCO film thicknesses, have been fabricated in situ by pulsed-laser deposition on 1.2degrees vicinal LaAlO3 substrates. The dielectric properties of BSTO thin films were measured with a parallel-plate capacitor configuration in the temperature range of 77-300 K. We observed a strong dependence of the dielectric properties of BSTO thin films on the thickness of the YBCO layer. As the YBCO-film thickness increases, the temperature of the dielectric permittivity maximum of BSTO thin films shifts to higher values, and the leakage current and dielectric loss increase drastically, while the dielectric constant and dielectric tunability decrease remarkably. The results are explained in terms of the transformation in the growth mode of the YBCO layer from two-dimensional step flow to three-dimensional island that leads to significant deterioration in the dielectric properties of BSTO thin films. We propose that improved dielectric properties could be obtained by reasonably manipulating the growth mode of the YBCO layer in the multilayer structures. (C) 2005 American Institute of Physics.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36631]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhu, XH,Peng, W,Li, J,et al. Effect of YBa2Cu3O7-delta film thickness on the dielectric properties of Ba0.1Sr0.9TiO3 in Ag/Ba0.1Sr0.9TiO3/YBa2Cu3O7-delta/LaAlO3 multilayer structures[J]. JOURNAL OF APPLIED PHYSICS,2005,97(1).
APA	Zhu, XH.,Peng, W.,Li, J.,Chen, YF.,Tian, HY.,...&Zheng, DN.(2005).Effect of YBa2Cu3O7-delta film thickness on the dielectric properties of Ba0.1Sr0.9TiO3 in Ag/Ba0.1Sr0.9TiO3/YBa2Cu3O7-delta/LaAlO3 multilayer structures.JOURNAL OF APPLIED PHYSICS,97(1).
MLA	Zhu, XH,et al."Effect of YBa2Cu3O7-delta film thickness on the dielectric properties of Ba0.1Sr0.9TiO3 in Ag/Ba0.1Sr0.9TiO3/YBa2Cu3O7-delta/LaAlO3 multilayer structures".JOURNAL OF APPLIED PHYSICS 97.1(2005).