It is found that the pyroelectric coefficient and susceptibility increase with the decrease of the magnitude of the long - range interaction and the interfacial coupling when the temperature is lower than the phase transition temperature 我们发现,在相变温度以下,随着双层薄膜的界面耦合的减弱,铁电双层薄膜的热电系数和介电极化率增加。
Considering the influence of dielectric constant , conductivity , and dielectric loss on electrorheological ( er ) effects , an effective approach to prepare supramolecular complex er materials was proposed by self - assembly 根据介电极化理论,从电流变液材料物理设计的介电常数、电导率和介电损耗等参数出发,采用分子自组装方法,制备出超分子配合物新型电流变液材料。
The pzt ferroelectric films " fatigue characteristics were studied , and here the electrical load was produced by rt6000s ; it was known that with the voltage increasing or frequency reducing , the degree of ferroelectric fatigue decay would increase 然后用rt6000s测试仪加载电载荷,总结得出pzt薄膜的铁电疲劳规律,即加载电压增加或加载频率降低时,铁电极化衰减程度变大。
We also find that the strong long - range interaction , the large transverse field and weak interfacial coupling can lead to the disappearance of some of the peaks of the pyroelectric coefficient and susceptibility of the ferroelectric bilayer . we believe that it is the reason why these phenomena always take place in the experimental studies 我们还发现,较强的长程相互作用,较大的横场以及相对较弱的界面耦合作用将会导致铁电双层薄膜的热电系数和介电极化率的某些峰消失,这可以用来解释在实验中常常观测不到热释电系数和介电极化率的某些峰值的原因。
In the framework of the long - range interaction , we study the interfacial effects on the pyroelectric and dielectric susceptibility of a ferroelectric bilayer for the first time . we find that the quantum effect can lead to the disappearance of some of the peaks of the pyroelectric and susceptibility of the bilayer 我们首次在长程相互作用的框架内,考察了界面对双层膜的热电、介电等物理性质的影响,且量子效应的增强会导致铁电双层薄膜的热电系数和介电极化率的某些峰的消失。