Probing the ferroelectric phase transition through Raman spectroscopy in Pb(Fe~2~/~3W~1~/~3)~1~/~2Ti~1~/~2O~3 thin films (3 pages)

Kumar, A. and Murari, N. M. and Katiyar, R. S. and Scott, J. F. (2007) Probing the ferroelectric phase transition through Raman spectroscopy in Pb(Fe~2~/~3W~1~/~3)~1~/~2Ti~1~/~2O~3 thin films (3 pages). Applied Physics Letters, 90. p. 262907. DOI 10.1063/1.2752535

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Abstract

The present work investigates the evolution of micro-Raman spectra of (1−x)Pb(Fe2/3W1/3)O3−xPbTiO3 (PFWT) (x=0.50) thin films in the temperature range from 80 to 600 K. Raman and dielectric data indicate that the crystal structure changes from tetragonal to cubic, i.e., a ferroelectric phase transition at 575 K. The dielectric properties of PFWT thin films were studied in the temperature range of 80–600 K over a wide range of frequencies. The slope of the reciprocal of the dielectric constant is 2:1, matched well with the simplest Landau free energy model, and it indicates a continuous second order displacive ferroelectric phase transition. ©2007 American Institute of Physics

Item Type:	Article
Uncontrolled Keywords:	2007 AREP 2007 P IA54
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Applied Physics Letters
Volume:	90
Page Range:	p. 262907
Identification Number:	10.1063/1.2752535
Depositing User:	Sarah Humbert
Date Deposited:	16 Feb 2009 13:02
Last Modified:	23 Jul 2013 10:07
URI:	http://eprints.esc.cam.ac.uk/id/eprint/460

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