Nucleation, pinning and hysteresis effects at the incommensurate-commensurate transition
- 30 October 1985
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 18 (30) , 5683-5696
- https://doi.org/10.1088/0022-3719/18/30/004
Abstract
Thermal hysteresis effects due to nucleation and pinning of two- and three-dimensional incommensurate structures are considered at the IC transition and inside the incommensurate phase. A possible disorder-induced domain wall interaction is taken into account. Various equilibrium and non-equilibrium effects due to randomly frozen-in impurities are critically summarised. The results allow the interpretation of unusual hysteresis effects of the dielectric constant observed recently in improper ferroelectrics. It is argued that nucleation is the decisive mechanism for the change of the domain wall density in incommensurate systems.Keywords
This publication has 29 references indexed in Scilit:
- Metastability and Depinning Threshold in the Random Field Ising ModelPhysica Status Solidi (b), 1985
- Free-energy barriers in incommensurate modulated phasesJournal of Physics C: Solid State Physics, 1983
- Nucleation processes in the charge density wave state of 2H-TaSe2Journal of Physics C: Solid State Physics, 1983
- Instabilities in Ising systems with short- and long-range-correlated quenched random fieldsJournal of Physics C: Solid State Physics, 1983
- Dielectric susceptibility and thermal hysteresis in K2SeO4and Rb2ZnCl4Journal of Physics C: Solid State Physics, 1983
- Pinning effects in incommensurately modulated structuresJournal of Physics C: Solid State Physics, 1983
- Domain walls, fluctuations and the incommensurate-commensurate transition in two and three dimensionsJournal de Physique, 1982
- Impurity pinning of discommensurations in charge-density wavesPhysical Review B, 1981
- Collective modes of a charge-density wave near the lock-in transitionPhysical Review B, 1977
- Theory of discommensurations and the commensurate-incommensurate charge-density-wave phase transitionPhysical Review B, 1976