非理想表面层对一级相变铁电薄膜性质的影响

Influence of imperfect surface layers on properties of first-order phase transition ferroelectric thin films

应用Ginzburg Landau Devonshire(GLD)理论研究了非理想表面对夹持在两个金属电极间的一级铁电薄膜性质的影响.结果表明,非理想表面层的存在降低了一级铁电薄膜的铁电相变转变温度,当两个表面层不对称时,铁电薄膜的电滞回线失去了中心对称性.

With the help of Ginzburg-Landau-Devonshire (GLD) theory, the influence of imperfect surface layers on the properties of first-order ferroelectric thin films intercalated between two metal electrodes is theoretically studied. The results show that the imperfect surface layer of ferroelectric thin films lowers the phase transition temperature. When the imperfect surface layers are asymmetric, the hysteresis hoop of the ferroelectric thin film loses its center symmetry.