Relaxation model for ferroelectric capacitors
Relaxation model for ferroelectric capacitors
复制标题
铁电电容器的弛豫模型
DOI：
10.1109/essderc.2001.195277
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
O. Kowarik
中科院分区：
文献类型：
--
作者：
G. Le Grand de Mercey;O. Kowarik
具有非饱和极化状态的铁电电容器会根据其先前的极化历史以两种不同的方式失去其极化。使用 SBT 电容器执行了松弛措施。 100 毫秒后，它们显示出高达 60% 的极化弛豫差异，具体取决于所施加的电压序列。据我们所知，尚未观察到这种现象。本文开发了饱和和非饱和磁滞回线弛豫过程的定量模型，包括观察到的效应，该模型将物理考虑因素与众所周知的 Preisach 模型相结合。模拟和测量显示出极好的一致性。
A ferroelectric capacitor with non saturated polarization state loses its polarisation depending on its previous polarization history in two different ways. Relaxation measures have been performed using SBT capacitors. They show a differrence in polarization relaxation of up to 60% after 100ms, depending on the applied voltage sequence. To our knowledge this phenomena has not been observed. In this paper a quantitative model of the relaxation process for saturated as well as non saturated hysteresis loops including the observed effects has been developed, which combines physical considerations with the well known Preisach model. Simulation and measures show excellent agreement.