The Application of Synchrotron Radiation Techniques to the Study of Domain Structures and their Dynamics in Ferroic Crystals

摘要

The recent research work on domain structures andtheir dynamics in ferroelastic and ferroelectric crystals by white-beam synchrotron radiation topography is summarized. The real-time imaging, fine-beam Laue diffraction, and anomalous-scattering topography were carried out to the study of the domainstructures and phase transition in the ferroelastic NdP_5O_14 andLaP_5O_14, and ferroelectric KTa_(1-x)Nb_xO_3,(Ba_(0.25)Sr_(0.75))_(0.9)(K_(0.5)Na_(0.5))_(0.2)Nb_2O_6,and KTiOPO_4 crystals. Some preliminary results are presented and discussed.