Kinetics of phase transitions in modulated ferroelectrics:: Time-resolved neutron diffraction from Rb2ZnCl4

被引：14

作者：

Eckold, G

Hagen, M

Steigenberger, U

机构：

[1] Univ Gottingen, Inst Phys Chem, D-3400 Gottingen, Germany

[2] Rutherford Appleton Lab, ISIS Facil, Chilton, England

[3] Keele Univ, Dept Phys, Keele, Staffs, England

来源：

PHASE TRANSITIONS | 1998年 / 67卷 / 01期

关键词：

ferroelectricity; incommensurate structures; non-equilibrium phenomena; phase transitions;

D O I：

10.1080/01411599808219195

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The kinetics of the ferroelectric phase transition between modulated phases in Rb2ZnCl4 at about 190 K has been investigated by time-resolved neutron scattering. Observing the time dependence of satellite spectra, it is found that the structural changes associated with the field-induced transformation proceed on a millisecond time scale. Under the influence of fast cycling strong electric fields unusual non-equilibrium states are obtained which are modulated in space as well as in time and characterised by the presence of internal mechanical strains.

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页码：219 / 244

页数：26

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