中国物理B ›› 2001, Vol. 10 ›› Issue (11): 1058-1061.doi: 10.1088/1009-1963/10/11/313
李振亚1, 吴银忠2
Wu Yin-zhong (吴银忠)ab, Li Zhen-ya (李振亚)ca
摘要: The effect of long-range interactions on the spontaneous polarization and the Curie temperature of the ferroelectric film is investigated by use of the Landau theory. On the assumption that the nearest-neighbour interaction remains constant, we find that the spontaneous polarization and the phase transition temperature increase with the enhancement of the long-range interactions. In the case of positive extrapolation length, the critical thickness of the ferroelectric film, in which a size-driven phase transition occurs, decreases with the enhancement of the long-range interactions.
中图分类号: (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)