Title
Microstructure and phase transitions in <tex>$Pb(Sc_{0.5}Ta_{0.5})O_{3}$</tex>Microstructure and phase transitions in <tex>$Pb(Sc_{0.5}Ta_{0.5})O_{3}$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Tokyo,
Subject
Chemistry
Source (journal)
Journal of electron microscopy. - Tokyo, 1953 - 2012
Volume/pages
48(1999):6, p. 843-847
ISSN
0022-0744
1477-9986
ISI
000085129600023
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The microstructure and phase transitions in the perovskite-based ferroelectric lead scandium tantalate, Pb(Sc0.5Ta0.5)O-3 have been investigated by transmission electron microscopy. The effects of ordering of Sc and Ta cations are apparent in reciprocal space as well as in direct space images. High-resolution observations allow direct structure imaging of the domain structure. The structure of the low temperature ferroelectric phase is studied by selected area electron diffraction (SAED) and electron microdiffraction. The relaxer behaviour of this paraelectric-ferroelectric transition is displayed by diffuse intensities in the SAED patterns at temperatures around the Curie point.
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