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Comparative studies on BaZrxTi1-xO3 thin films deposited by Sol-gel and Pulse laser deposition

Published online by Cambridge University Press:  01 February 2011

A. Dixit
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR-00931–3343
P. Bhattacharaya
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR-00931–3343
S. B. Majumder
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR-00931–3343
R. S. Katiyar
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR-00931–3343
A. S. Bhalla
Affiliation:
Materials Research Center, Pennsylvania State University, University Park, PA 16802
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Abstract

Ferroelectric thin films of BaZrxTi1-xO3 (BZT) were deposited on platinum (Pt) and platinized silicon (Pt/Si) substrates by sol-gel and pulse laser deposition technique respectively. The structure and preferred orientation of the films were examined by x-ray diffraction measurements. The phase formation of sol-gel derived BZT films were found to be at high temperature (1100°C) compare to the pulse laser deposited BZT films ∼ 700°C. Polycrystalline films were observed by both techniques. Ferroelectric nature of the films was confirmed by hysteresis and capacitance-voltage characteristics using platinum top electrodes. Dielectric constant as well as loss was found to decrease by increasing Zr contents. Surface morphology predicted smooth crack free surface.

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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