掺镧锆钛酸铅陶瓷电致畴变过程中的相变-中国有色金属学报.PDF

25 10 2015 10 Volume 25 Number 10 The Chinese Journal of Nonferrous Metals October 2015 1004-0609(2015)10-2777-06 1 2, 3 2, 3 (1. 361021 2. 361005 3. 361005) XRD (PLZT)(002)(200) (002)(200) XRD PLZT 90° XRD TB321 A Phase transition of lanthanum-doped lead zirconate titanate ceramics during electric-field-induced domain switching 1 2, 3 2, 3 YANG Feng-juan , CHENG Xuan , ZHANG Ying (1. College of Mechanical and Materials Engineering, Xiamen Institute of Technology, Xiamen 361021, China; 2. College of Materials, Xiamen University, Xiamen 361005, China; 3. Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen 361005, China) Abstract: Variations of the peak intensities of (002) and (200) diffraction peaks (I(002), I(200)) with the applied electric fields were studied by in-situ X-ray diffraction method during the applications of different electric fields on the unpoled lanthanum-doped lead zirconate titanate (PLZT) ceramics. Considering the distribution of domain orientation, the quantitative analyses of peak intensities of I(002) and I(200) were performed. Based on the multi-peak curve fitting to the in-situ XRD spectra, the effects of the applied electric fields on the electric-field-induced domain switching and phase transition were preliminarily discussed. The results show that the electric-field-induced 90° domain switching occurs in PLZT specimens under the applied electric fields,