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 spontaneous polarization of ferroelectric films was strengthened and then weakened with the increasing of annealing temperature.
自发极化强度大的电气石具有净化空气和水的作用，在环保建筑装饰材料、净化水和空气材料中有很大的应用价值。
The tourmaline with great spontaneous polarity can purify water and air. So it can be used in building decorating material, purifying water materials and cleaning air materials.
从相图上得知，外加应力可以改变薄膜的自发极化的极化方向及强度。
It is shown that the external stress may lead to the rotation of the spontaneous Ps and a gradual change of its magnitude.
从相图上得知，外加应力可以改变薄膜的自发极化的极化方向及强度。
It is shown that the external stress may lead to the rotation of the spontaneous Ps and a gradual change of its magnitude.
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