We provide an insight into the switching of near-morphotropic composition of PZT, using molecular dynamics simulations and electrical measurements. The simulations and experiments exhibit qualitatively similar hysteretic behavior of the polarization for different temperatures showing widening of the P-E loops and the decrease in the coercive field toward high temperatures. Remarkably, we have shown that polarization switching at low temperatures occurs via polarization rotation, that is a fundamentally different mechanism from high-temperature switching, which is nucleation driven.

中文翻译：

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同向性 Pb(Zr1−xTix)O3 中的低温铁电行为

我们使用分子动力学模拟和电学测量，深入了解 PZT 的近同向性成分的转换。模拟和实验显示出不同温度下极化的定性类似滞后行为，显示 PE 回路变宽和矫顽场向高温降低。值得注意的是，我们已经证明低温下的极化转换是通过极化旋转发生的，这是一种与成核驱动的高温转换根本不同的机制。