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.
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Official URL: http://www.iop.org/EJ/abstract/1367-2630/11/8/083021/
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.
|Title:||The ferroelectric phase transition of calcium barium niobate: experimental evidence of Smolenskii's model for diffuse phase transitions?|
|Journal or Publication Title:||New Journal of Physics|
|In Open Access:||Yes|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1-9|
|Publisher:||IOP Publishing Ltd and Deutsche Physikalische Gesellschaft|
|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 assignment|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||no assignment|
|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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