کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1449874 | 988716 | 2007 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of grain orientation and grain size on ferroelectric domain switching and evolution: Phase field simulations Effect of grain orientation and grain size on ferroelectric domain switching and evolution: Phase field simulations](/preview/png/1449874.png)
Phase field simulations were conducted in order to understand the effect of grain orientation, grain boundary and grain size on ferroelectric domain switching, stress distribution and evolution behavior under an applied electric field. Tetragonal ferroelectric domains were considered. Hysteresis loops were obtained for a single crystal, a bi-crystal and a polycrystal and the differences in their coercive fields were examined. It was found that the magnitude of the coercive field was closely related to the domain structures at the maximum electric field. Nucleation of new domains at a grain boundary led to local high stress. The effect of a reduced ferroelectric transition temperature at the grain boundary on the polarization distribution, domain structure and switching was studied.
Journal: Acta Materialia - Volume 55, Issue 4, February 2007, Pages 1415–1426