The different influence of hydrostatic pressure to the glassy dielectric behavior of ferroelectrics with diffuse and sharp phase transition
- 1 March 1988
- journal article
- incommensurate phases-and-glasses
- Published by Taylor & Francis in Ferroelectrics
- Vol. 79 (1) , 323-326
- https://doi.org/10.1080/00150198808229460
Abstract
Investigations of different ferroelectrics under high hydrostatic pressure at low temperatures show that the dielectric loss maximum as it appears at many glasses can be influenced by pressure. At ferroelectrics with diffuse phase transition the activation energy of the excitations responsible for the loss maximum decreases by pressure while their number increases. In contrast at (Ba, Sr) TiO3 solid solutions with sharp phase transition the activation energy is not markedly changed by pressure, but the number of excitations decreases up to the critical pressure where a sudden change of the activation energy occurs.Keywords
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