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The ferroelectric phase transition of calcium barium niobate: experimental evidence of Smolenskii's model for diffuse phase transitions?

Heine, Urs and Voelker, Uwe and Betzler, Klaus and Burianek, Manfred and Muehlberg, Manfred (2009) The ferroelectric phase transition of calcium barium niobate: experimental evidence of Smolenskii's model for diffuse phase transitions? New Journal of Physics, 11 (083021), pp. 1-9. IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. DOI: 10.1088/1367-2630/11/8/083021.

Full text not available from this repository.

Official URL: http://www.iop.org/EJ/abstract/1367-2630/11/8/083021/

Abstract

We present investigations on temperature-dependent changes in the size distribution of ferroelectric domains in single crystals of the novel tungsten bronze type calcium barium niobate (CBN). Since its congruently melting composition has a relatively high ferroelectric phase transition temperature of about 265 °C, CBN can be considered as an interesting material for various future applications. Using k-space spectroscopy, both unpoled polydomain crystals and crystals poled at room temperature have been investigated in the vicinity of the ferroelectric phase transition. In unpoled CBN, an intermixture of domain-size dependent phase transitions has been observed, which can be described with the model for diffuse phase transitions established by Smolenskii.

Document Type:Article
Title:The ferroelectric phase transition of calcium barium niobate: experimental evidence of Smolenskii's model for diffuse phase transitions?
Authors:
AuthorsInstitution or Email of Authors
Heine, UrsFachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
Voelker, UweInstitut für Technische Physik, Deutsches Zentrum für Luft- und Raumfahrt, D-70569 Stuttgart, Germany
Betzler, KlausFachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
Burianek, ManfredInstitut für Kristallographie, Universität zu Köln, D-50674 Köln, Germany
Muehlberg, ManfredInstitut für Kristallographie, Universität zu Köln, D-50674 Köln, Germany
Date:2009
Journal or Publication Title:New Journal of Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:11
DOI:10.1088/1367-2630/11/8/083021
Page Range:pp. 1-9
Publisher:IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Status:Published
Keywords:Ferroelectrics, Relaxors, k-Spectra, Nonlinear Optics, Phase Transitions, Smolenskii Modell
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignement
DLR - Program:no assignment
DLR - Research theme (Project):other
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Uwe Völker
Deposited On:23 Nov 2009 08:38
Last Modified:04 Apr 2013 16:17

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