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Title: Dielectric tunability of (Ba0.5Sr0.5)TiO3/LaNiO3 heterostructure films
Other Title: (Ba0.5Sr0.5)TiO3/LaNiO3異質薄膜的介電調諧特性
Authors: Xiong, HF
Tang, XG
Jiang, LL
Chan, HLW 
Issue Date: 2007
Source: 壓電與聲光 (Piezoelectrics & acoustooptics), 2007, v. 29, no. 1, p. 80-86
Abstract: (Ba0.5Sr0.5)TiO3(BST) thin film and(Ba0.5Sr0.5)TiO3/LaNiO3(BST/LNO) heterostructure thin films were deposited on Pt(111)/Ti/SiO2/Si(100) substrates by a pulsed laser deposition process.Annealed at 650 ℃ for 10 min,the preferred(100)-and(110)-oriented columnar-grained BST and BST/LNO thin films were obtained.The grain size of BST and BST/LNO thin films are about 150~200 nm and 50~80 nm,respectively.Respectively,the dielectric constants and dielectric tunabilities of BST and BST/LNO thin films were 811 and 58.9%,986 and 60.1%,respectively.The BST films on LNO coated Pt/Ti/SiO2/Si substrates had higher dielectric constant and tunability.
Keywords: Pulsed laser deposition
BST thin film
Heterostructure
dielectric tunability
Figure of merit
Publisher: 中國學術期刊(光盤版)電子雜誌社
Journal: 壓電與聲光 (Piezoelectrics & acoustooptics) 
ISSN: 1004-2474
Rights: © 2007 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2007 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research purposes.
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