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Phase Transition and Dielectric Tunability of Chemical Solution Deposited (Pb0.35Sr0.65)(Zr0.5Ti0.5)O3 Thin Films on Pt/ZrO2/SiO2/Si Substrates

Published online by Cambridge University Press:  01 February 2011

Naba K Karan ,
Marilin Perez ,
Jose Saavedra ,
Dillip K Pradhan ,
Reji Thomas  and
Ram S Katiyar
Naba K Karan
Affiliation:
naba_bapi@yahoo.com, University of Puerto Rico, Department of Physics, PO Box 23343, San Juan, 00931, Puerto Rico, 787 751 4210, 787 764 2571
Marilin Perez
Affiliation:
zeopeli@gmail.com, University of Puerto Rico, Department of Physics and Institute for Functional Nanomaterials, PO Box 23343, San Juan, 00931, Puerto Rico
Jose Saavedra
Affiliation:
jsaavedr@gmail.com, University of Puerto Rico, Department of Physics and Institute for Functional Nanomaterials, PO Box 23343, San Juan, 00931, Puerto Rico
Dillip K Pradhan
Affiliation:
dillip.pradhan79@gmail.com, University of Puerto Rico, Department of Physics and Institute for Functional Nanomaterials, PO Box 23343, San Juan, 00931, Puerto Rico
Reji Thomas
Affiliation:
etreji@yahoo.com, University of Puerto Rico, Department of Physics and Institute for Functional Nanomaterials, PO Box 23343, San Juan, 00931, Puerto Rico
Ram S Katiyar
Affiliation:
rkatiyar@upr.clu.edu, University of Puerto Rico, Department of Physics and Institute for Functional Nanomaterials, PO Box 23343, San Juan, 00931, Puerto Rico
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Abstract

(Pb0.35Sr0.65)(Zr0.5Ti0.5)O3 thin films were grown on Pt/ZrO2/SiO2/Si substrates by chemical solution deposition. As-deposited (pyrolysed at 500°C) films were amorphous and single phase films were obtained at temperature as low as 550°C with a 30 nm SrTiO3 seed layer. Dielectric constant and loss tangent at room temperature were 210 and 0.022, respectively at 100 kHz for the film annealed at 700°C. Frequency dispersion of the dielectric properties was low. The phase transition temperature (ferroelectric to paraelectric) was well below the room temperature and was around 220 K. The room temperature tunability and the k-factor at 500 kV/cm was around 45% and 16, respectively.

Keywords

solution depositionthin filmdielectric properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1034 , 2007 , 1034-K10-40
Copyright
Copyright © Materials Research Society 2008

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