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Effects of La0.5Sr0.5CoO3 sol concentration on the microstructure and dielectric properties of Ba0.6Sr0.4TiO3 films prepared by sol-gel method on Ti substrate

Published online by Cambridge University Press:  18 December 2012

Dan Jiang ,
Songwei Han ,
Xuelian Zhao  and
Jinrong Cheng
Dan Jiang
Affiliation:
School of Materials Science and Engineering, Shanghai University, Shanghai 200072
Songwei Han
Affiliation:
School of Materials Science and Engineering, Shanghai University, Shanghai 200072
Xuelian Zhao
Affiliation:
School of Materials Science and Engineering, Shanghai University, Shanghai 200072
Jinrong Cheng*
Affiliation:
School of Materials Science and Engineering, Shanghai University, Shanghai 200072
*
*corresponding author: [email protected]
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Abstract

Ba0.6Sr0.4TiO3 (BST) thin films were deposited on La0.5Sr0.5CoO3 (LSCO) buffered Ti substrates. Both BST and LSCO were prepared by sol-gel method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis were used to investigate the effect of LSCO sol concentration on the crystallinity and surface morphology of the films. The results show that with the increase of LSCO sol concentration, BST films show variation of the structure and dielectric properties. BST films for LSCO of 0.2 mol/L exhibit a better crystallinity and improved dielectric properties, with the tunability, dielectric constant and tanδ of 30%, 420 and 0.028 respectively.

Keywords

filmdielectricsol-gel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1494: Symposium F – Oxide Semiconductors and Thin Films , 2013 , pp. 253 - 258
Copyright
Copyright © Materials Research Society 2012 

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References

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