Frequency and temperature dependence of the hysteresis loop in PMnN-PZT ceramics
Year: 2005
Type: article
Abstract: The frequency and temperature dependence of the hysteresis loops in Pb［(Zr0 52Ti048)095(Mn1/3Nb2/3)005］O3 (PM nN_PZT) ceramics have been investigated. It has been demonstrated that the polar ization_field hysteresis curves show “pinched" shapes instead of the normal squ are_like P_E loops when tested at room temperature or higher frequency. While at 200℃ or lower frequency, normal square_like loops are observed. In the meantim e, important ferroelectric features such as coercive field, polarization and int ernal bias field are strongly frequency or temperature dependent. High increase of the remnant polarization (Pr) reveals that there may be defect dipo les that induce the unsaturated hysteresis loop. The close relations between the P_E loops and the applied frequencies or temperatures indicate that there exist s a typical relaxation time associated with reorientation of the defect dipoles.
Source: Acta Physica Sinica
DOI: 10.7498/aps.54.939
Authors: Li Bao-Shan, Zhu Zhi-Gang, Li Guo-Rong, Yin Qing-Rui, Ding Ai-Li, 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室，上海 200050
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W634899723