Kinetic characteristics of the thermal hysteresis in an incommensurate system
- 1 January 1984
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 45 (7), 329-334
- https://doi.org/10.1051/jphyslet:01984004507032900
Abstract
The anomalous thermal hysteresis occurring in an incommensurate phase has been investigated in barium sodium niobate. The kinetics of this phenomenon is determined for the first time. We observe relaxation effects with characteristic times of several hours. They are associated with large variations of the heating/cooling plots which are interpretated by assuming that the incommensurate modulation interacts with mobile defects. Similar effects should occur in other real systems with incommensurate phasesKeywords
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