材料科学
电极
极化(电化学)
磁滞
陶瓷
压电
铁电性
肖特基势垒
介电常数
复合材料
铁电陶瓷
电介质
锡
光电子学
凝聚态物理
冶金
化学
物理
物理化学
二极管
作者
Feng Chen,Robert Schafranek,André Wachau,Sergey Zhukov,Julia Glaum,Torsten Granzow,Heinz von Seggern,Andreas Klein
摘要
The influence of Pt, tin-doped In2O3, and RuO2 electrodes on the electrical fatigue of bulk ceramic Pb(Zr,Ti)O3 (PZT) has been studied. Schottky barrier heights at the ferroelectric/electrode interfaces vary by more than one electronvolt for different electrode materials and do not depend on crystallographic orientation of the interface. Despite different barrier heights, hysteresis loops of polarization, strain, permittivity, and piezoelectric constant and the switching kinetics are identical for all electrodes. A 20% reduction in polarization after 106 bipolar cycles is observed for all the samples. In contrast to PZT thin films, the loss of remanent polarization with bipolar switching cycles does not significantly depend on the electrode material.
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