DYNAMIC PROPERTIES OF DIELECTRIC SUSCEPTIBILITY IN FERROELECTRIC THIN FILMS

作者：Cui, Lian^*; Cui, Haiying; Wu, Chunmei; Yang, Guihua; He, Zelong; Wang, Yuling; Che, Jixin

来源：Surface Review and Letters, 2016, 23(3): 1650010.

DOI：10.1142/S0218625X16500104

• Ferroelectric thin film
• dielectric susceptibility
• applied field

In this paper, frequency, temperature, film thickness, surface effects,and various parameters dependence of dielectric susceptibility is investigated theoretically for ferroelectric thin films by the modified Landau theory under an AC applied field. The dielectric susceptibility versus AC applied field shows butterfly-shaped behavior, and depends strongly on the frequency and amplitude of the field and temperature. Our study shows that the existence of the surface transition layer can depress the dielectric susceptibility of a ferroelectric thin film. These results are well consistent with the phenomena reported in experiments.

• 出版日期2016-6
• 单位大庆师范学院; 中国人民解放军空军航空大学; 黑龙江工程学院