电极化强度

本文将电极化强度矢量分解为非电离电极化强度矢量与电离电极化矢量两者之和，并利用电子运动方程，首次推导出非电离与电离混合大气层的折射指数，并得到了相速与群速。

By dividing the electric polarization vector into those in non ionized and ionized media , and by using the equation of electron motion , the refractive index in mixture atmosphere is first derived , and the phase and group velocities are also obtained in this paper .

铁电材料的主要特征是具有铁电性，即电极化强度与外电场之间具有电滞回线的关系。

The ferroelectric materials are characterized by the ferroelectricity , namely , there is a ferroelectric hysteresis loop relation between the polarization and the external electric field .

分析了激光入射晶体后激发的电极化强度特性，发现在与激光传输垂直方向存在一恒定电极化强度分量。

On the basic electromagnetic dynamics theory , the characteristics of electric polarization caused by laser in crystal are investigated in details , and a constant electric polarization in vertical direction to laser propagating is discovered .

对于纯铁电液晶，自发极化强度与分子倾斜角之间存在与温度无关的线性关系；

For the pure ferroelectric liquid crystal , the spontaneous polarisation has a linear relation with the tilt angle , and the linearity of between the two parameters is independent of temperature .