UNSPECIFIED (2004) Effect of high pressure on the relaxor ferroelectrics Na1/2Bi1/2TiO3 (NBT) and PbMg(1/3)Nb(2/3)O3 (PMN). In: 10th European Meeting on Ferroelectricity, Univ Cambridge, Cambridge, ENGLAND, AUG 03-08, 2003. Published in: FERROELECTRICS, 302 pp. 539-544.

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Abstract

The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced suppression of the relaxor characteristic X-ray diffuse scattering that points to important changes in the local order. The complementary use of Raman spectroscopy, X-ray diffraction and X-ray diffuse scattering allows the proposition of a mechanism for the observed changes.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics
Journal or Publication Title:	FERROELECTRICS
Publisher:	TAYLOR & FRANCIS LTD
ISSN:	0015-0193
Date:	2004
Volume:	302
Number of Pages:	6
Page Range:	pp. 539-544
Identification Number:	10.1080/00150190490455269
Publication Status:	Published
Title of Event:	10th European Meeting on Ferroelectricity
Location of Event:	Univ Cambridge, Cambridge, ENGLAND
Date(s) of Event:	AUG 03-08, 2003
URI:	http://wrap.warwick.ac.uk/id/eprint/8253

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