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Novel route for the epitaxial growth of (SrBa)Nb2O6 thick films by the sol-gel method using a self-template layer

Published online by Cambridge University Press:  31 January 2011

A-D. Li*
Affiliation:
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, and National Laboratory of Solid State Microstructures and Materials Science and Engineering Department, Nanjing University, Nanjing 210093, People's Republic of China
C. L. Mak
Affiliation:
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
K. H. Wong
Affiliation:
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
D. Wu
Affiliation:
National Laboratory of Solid State Microstructures and Materials Science and Engineering Department, Nanjing University, Nanjing 210093, People's Republic of China
Naiben Ming
Affiliation:
National Laboratory of Solid State Microstructures and Materials Science and Engineering Department, Nanjing University, Nanjing 210093, People's Republic of China
*
a) Address all correspondence to this author. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People's Republic of China. e-mail: adli@netra.nju.edu.cn
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Abstract

A novel sol-gel processing method has been developed to fabricate epitaxial (SrBa)Nb2O6 (SBN) thin films on MgO substrates. It involves the introduction of a SBN self-template layer on MgO by pulsed laser deposition (PLD). Effects of the SBN self-template layer on the structural and morphological properties of the sol-gel-derived SBN films were investigated. Compared to the sol-gel-derived SBN films without a self-template layer, our new technique produces SBN films of excellent epitaxy and more dense grains with uniform distribution. This can be explained by the self-template-layer-induced homoepitaxial growth. The innovative processing method with combination of PLD and sol-gel is a promising technique in preparing high-quality, thick epitaxial SBN films for electro-optics device applications.

Type
Articles
Copyright
Copyright © Materials Research Society 2001

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