Optical Activity and Phase Transition of Pb1-xLax(ZryTiz)1-x/4O3

Autor: Yoshii, Hiroshige, Shimasaki, Tsuyoshi, Ichiki, Masaaki, Itagaki, Yosuke, Asahi, Toru, Saito, Kazuya, Kobayashi, Jinzo, Ikawa, Hiroyuki
Zdroj: Japanese Journal of Applied Physics; September 1994, Vol. 33 Issue: 9 p5435-5435, 1p
Abstrakt: Electric field dependences of optical activity and birefringence of Pb0.92La0.08(Zr0.7Ti0.3)0.98O3(PLZT(8/70/30)) were studied using the high-accuracy universal polarimeter (HAUP) method in a temperature region between 0° C and 90° C. PLZT(8/70/30) was optically active in the low-temperature and inactive in the high-temperature phases. Furthermore it was revealed that gyration and birefringence in the low-temperature phase manifested typical butterfly hysteresis loops with respect to electric fields. From analysis of Weissenberg photographs, the ceramics of both high- and low-temperature phases were found to consist of crystallites which were distributed in equal weight along the total solid angles. Using the combined evidence from HAUP and X-ray methods, it was clarified that the classes of the high- and low-temperature phases are Thand C3, respectively.
Databáze: Supplemental Index