Temperature dependent structural and dielectric investigations of PbZr0.5Ti0.5O3 solid solution at the morphotropic phase boundary

Srivastava, Geetika and Goswami, Ankur and Umarji, AM (2013) Temperature dependent structural and dielectric investigations of PbZr0.5Ti0.5O3 solid solution at the morphotropic phase boundary. In: CERAMICS INTERNATIONAL, 39 (2). pp. 1977-1983.

PDF cer_int_39-2_1977_2013.pdf - Published Version Restricted to Registered users only Download (717kB) | Request a copy

Abstract

PbZr1-xTixO3 ceramics synthesised by low temperature calcination followed by sintering at 1280 degrees C show a Morphotropic Phase Boundary (MPB) for compositions of x=0.44-0.51. The morphotropic phase boundary is wider for samples with smaller grain sizes due to the synthesis route. A Rietveld analysis is performed on a composition of x=0.5 composition to quantify the phase fractions of the tetragonal and monoclinic phases present in the PZT system. Temperature dependent X-ray diffraction and dielectric studies of PbZr0.5Ti0.5O3 composition demonstrated a phase transformation from monoclinic to tetragonal at 270 degrees C followed by a ferroelectric tetragonal to a paraelectric cubic transition at 370 degrees C. Thus, the poling of these ceramics should be performed below 270 degrees C to benefit from the presence of a monoclinic phase. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type:	Journal Article
Publication:	CERAMICS INTERNATIONAL
Publisher:	ELSEVIER SCI LTD
Additional Information:	Copyright for this article belongs to ELSEVIER SCI LTD, ENGLAND
Keywords:	Sintering;Grain size;Dielectric properties;PZT
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	20 Feb 2013 08:47
Last Modified:	20 Feb 2013 08:47
URI:	http://eprints.iisc.ac.in/id/eprint/45823

Actions (login required)

View Item