Macroscopic Analysis on Hysteresis Loops of the Pb1.1Zr0.52Ti0.48O3 Film

鋯鈦酸鉛薄膜電滯曲線的巨觀分析

10.6409/JMSE.200303.0052

蔡竑名(H. M. Tsai)；陳宜君(Y. C. Chen)；鄭秀鳳(H. F. Cheng)

電滯曲線 ； 相變 ； 居禮溫度 ； 鋯鈦酸鉛 ； 鐵電薄膜 ； hysteresis loops ； the phase transition ； the Curie temperature ； PZT ； ferroelectric thin films

材料科學與工程

35卷1期（2003 / 03 / 01）

52 - 57

英文

用Landau理論來分析在不同溫度下鐵電PZT薄膜的電滯曲線，可以得到有關鐵電薄膜相變的重要物理量，譬如居禮溫度、居禮常數與其他熱力學參數。

Hysteresis loops play an important role on the fundamental characteristics of ferroelectric materials. In this article, a method is proposed on the basis of Landau theory to analyze the information in the hysteresis loops of the PZT (Pb1.1Zr0.52Ti0.48O3) ferroelectric thin films under different temperatures and make some predictions such as the Curie temperature, the Curie constant, the spontaneous polarization, and so on. Furthermore, from the Clausius-Clayperon equation, the difference between the upper-limit temperature at which ferroelectric phase occurs under applied electric field and the Curie temperature can be verified. Despite of some degree of inconsistency between the observed values and the predicted ones, this method is still of great potential, especially in further application based on more precise theories other than Landau's.