A method of synchronous measurement of the piezoresponse signal and electrical impedance when studying the processes of polarization switching in an external electric field has been described. Using the developed technique, the processes of switching ferroelectric (FE) phase of lead magnoniobate induced by an electric field are studied. It is shown that a polydomain structure with a weak piezoresponse is formed during the initial appearance of the FE phase. A change in the direction of the external field leads to polarization switching, and the switching process passes through an intermediate glass-like phase. Training the sample by multiple switching leads to a sharp increase in piezoresponse, which can be associated with a single-domain state formation.

中文翻译：

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电场中Pb（Mg _1/3 Nb _2/3）O ₃弛豫材料的介电响应和压电响应的组合实时研究

已经描述了一种在研究外部电场中的极化切换过程时同步测量压电响应信号和电阻抗的方法。利用所开发的技术，研究了电场引起的菱锰矿酸铅铁电相的转换过程。结果表明，在FE相的初始出现期间，形成了具有弱压电响应的多畴结构。外场方向的改变导致偏振切换，并且切换过程经过中间的玻璃状相。通过多次切换训练样本会导致压电响应急剧增加，这可能与单域状态形成有关。