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Browse Journals & Magazines > Applied Physics Letters ...> Volume:92 Issue:4 Help

Effects of LaNiO3 bottom electrode on structural and dielectric properties of CaCu3Ti4O12 films fabricated by sol-gel method

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5 Author(s)
Li, Y.W. ; Department of Electronic Engineering, East China Normal University, Shanghai 200062, People’s Republic of China ; Hu, Z.G. ; Sun, J.L. ; Meng, X.J.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2837534 

CaCu3Ti4O12 (CCTO) thin films are prepared by a sol-gel method on LaNiO3-coated silicon and Pt/TiO2/SiO2/Si substrate. Compared with the films on Pt, the CCTO on LaNiO3 exhibits a (400) orientation. Dielectric loss of CCTO on LaNiO3 is lower than 0.25 within 100 Hz–10 kHz, lower than the reported value of CCTO grown on Pt/TiO2/SiO2/Si by pulse laser deposition. Possible reason is that LaNiO3 acts as seed layer for the growth of CCTO. The crystallinity of CCTO is improved and the dielectric properties are enhanced. Complex impedance spectrum of CCTO on LaNiO3 is discussed according to grain boundary barrier layer capacitance model.

Published in:
Applied Physics Letters  (Volume:92 ,  Issue: 4 )

Date of Publication: Jan 2008

Page(s):
042901 - 042901-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2837534
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Jan 2008

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