Pyroelectric effect and freezing out of domain structure in betaine arsenate
- 1 December 1988
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics Letters Section
- Vol. 9 (4) , 107-116
- https://doi.org/10.1080/07315178808200714
Abstract
This work reports some results concerning the study of pyroelectric effect in Betaine Arsenate ((CH3)3 NCH2 COO.H3 As O4). The pyroelectric coefficient along the crystallographic c-axis reveals two anomalies localized in the temperature range of 110–120 K. The existence of these two anomalies is confirmed by an experimental study of dielectric constant and dielectric loss in the same samples. We interpret the upper anomaly as that between a paraelectric and a mixed phase, i.e. a ferroelectric and structural glass and the lower one as a freezing temperature where the domain wall mobility is frozen out.Keywords
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