Author： Cizman A. Sieradzki A. Poprawski R.
Publisher： Taylor & Francis Ltd
ISSN： 0015-0193
Source： Ferroelectrics, Vol.336, Iss.1, 2006-01, pp. : 101-106
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Abstract
The results of precise measurements of spontaneous birefringence in the temperature range of 285 K 320 K for (CH 3 NH 3 ) 5 Bi 2 Cl 11 (PMACB) are presented. Linear dependences between the spontaneous birefringence and the spontaneous polarization in ferroelectric phase were shown in a wide temperature range. Linear relations of the spontaneous birefringence and the excess entropy for PMACB crystals were proved.
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