TY - JOUR
T1 - Polarization fatigue in antiferroelectric (Pb,La)(Zr,Ti)O3 thin films
T2 - The role of the effective strength of driving waveform
AU - Geng, Wenping
AU - Liu, Yang
AU - Lou, Xiaojie
AU - Zhang, Fuping
AU - Liu, Qida
AU - Dkhil, Brahim
AU - Zhang, Ming
AU - Ren, Xiaobing
AU - He, Hongliang
AU - Jiang, Anquan
N1 - Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - In this study, a critical parameter termed as "effective electric strength" is developed to depict polarization fatigue in antiferroelectric thin films. Specifically, the effect of pulse width, frequency, and magnitude of driving voltage (or field) on polarization fatigue of antiferroelectric (Pb,La)(Zr,Ti)O3 (PLZT) thin films was investigated in detail. By transforming all the waveforms with different pulse-widths/voltages/frequencies into their effective electric strength, a strong correlation between the effective strength and the degree of polarization fatigue in the PLZT films is revealed. For instance, it was found that appreciable fatigue usually occurs when the effective strength is larger than or equal to the voltage of phase transition from antiferroelectric phase to ferroelectric phase. In addition, it is shown that the films are more prone to fatigue for a lower frequency of the same effective strength. Our findings could be well explained in the framework of the local phase decomposition arising from switching induced charge injection.
AB - In this study, a critical parameter termed as "effective electric strength" is developed to depict polarization fatigue in antiferroelectric thin films. Specifically, the effect of pulse width, frequency, and magnitude of driving voltage (or field) on polarization fatigue of antiferroelectric (Pb,La)(Zr,Ti)O3 (PLZT) thin films was investigated in detail. By transforming all the waveforms with different pulse-widths/voltages/frequencies into their effective electric strength, a strong correlation between the effective strength and the degree of polarization fatigue in the PLZT films is revealed. For instance, it was found that appreciable fatigue usually occurs when the effective strength is larger than or equal to the voltage of phase transition from antiferroelectric phase to ferroelectric phase. In addition, it is shown that the films are more prone to fatigue for a lower frequency of the same effective strength. Our findings could be well explained in the framework of the local phase decomposition arising from switching induced charge injection.
KW - A. Sol-gel processes
KW - Electronic properties
KW - Thin films
UR - https://www.scopus.com/pages/publications/84937526682
U2 - 10.1016/j.ceramint.2015.03.265
DO - 10.1016/j.ceramint.2015.03.265
M3 - 文章
AN - SCOPUS:84937526682
SN - 0272-8842
VL - 41
SP - S289-S295
JO - Ceramics International
JF - Ceramics International
IS - S1
ER -