The existence of domain walls reduces both the spontaneous polarization and the Curie temperature, and increases the critical size.
畴壁的存在使自发极化和居里温度降低，使临界尺寸增大。
The spontaneous polarization of ferroelectric films was strengthened and then weakened with the increasing of annealing temperature.
此外，随退火温度升高，铁电薄膜的自发极化强度先增强后减弱。
The ferroelectricity means the spontaneous polarization that exists in some materials, and the spontaneous polarization can change its direction when the external electric field alters.
铁电性是指某些物质存在自发电极化现象，并且自发极化矢量取向能随着外电场而改变。
A new principle for free electron lasers is proposed for the first time by using very strong surface periodic potential caused by the spontaneous polarization of ferroelectric single crystals.
本文利用铁电晶体自发极化产生的强大周期性表面势，首次提出新的自由电子激光原理。
A model of logging response of spontaneous potential and induced polarization potential is established.
建立了自然电位和激发极化电位测井响应模型。
A model of logging response of spontaneous potential and induced polarization potential is established.
建立了自然电位和激发极化电位测井响应模型。
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