自发极化

纤锌矿结构的ZnO晶体沿着c轴方向具有极性，自发极化对ZnO的光电性能、化学性质等都有重要影响。

The spontaneous polarization along the c-axis will affect the structural , optical , electrical , and chemical properties of ZnO thin films and nano-structures .

ABO3型晶体中氧的电子自发极化

Electronic spontaneous polarization of o ~ ( - 2 ) in the abo_3-type crystals

这一电动势与晶体的自发极化Ps同时存在。

This BMF coexists with the spontaneous , polarization P3 .

极性ZnO基异质结中存在自发极化和压电极化现象，将会导致器件发光效率降低和发光波长红移。

Spontaneous polarization and piezoelectric polarization exist in polar ZnO-based heterojunction . As a result , the luminescence efficiency of ZnO-based device would decrease and the luminescent wavelength would redshift .

其中只有系列Ⅲ能改变分子的电偶极矩，该系列振动模式和β相的PVDF的自发极化有着密切的关系。

Only series 1 of all the vibrational modes causes the change of the dipole moment of PVDF molecule , and is related to the spontaneous polarization .

BHT薄膜表现出显著的铁电极化各向异性，主要自发极化发现仍沿a轴方向。

The BHT film showed a significant anisotropy of the ferroelectric polarization , and the spontaneous polarization remains along the a-axis .

铁电单晶体自发极化引起的强周期性表面电场可能用来代替Wiggler磁铁产生自由电子激光。但落在铁电晶体表面上的自由电子将逐渐把表面势屏蔽掉。

The strong periodic surface electric strength caused by spontaneous polarization may be used as an undulator instead of Wiggler magnet to produce free electron laser .

热释电性能测试表明，晶体的自发极化、热释电系数和热释电优值大于纯态的TGS。

The measurement of pyroelectric property is shown that the spontaneous polarization , pyroelectric coefficience and pyroelectric merit are large than that of pure TGS crystal .

钛酸锶（SrTiO3）低温时的自发极化

Spontaneous Polarization of SrTiO_3 at Low Temperature

利用电子束轰击结合变温XRD分析发现在Schorl-dravite系列电气石中，产于伟晶岩的，结晶度比较高的Mg电气石或Fe电气石具有较高的自发极化强度。

It was found that the Schorl or dravite in schorl-dravite group that is produced from pegmatite and has good crystal degree had a strong intensity of spontaneous polarity by electron-beam bombardment and X-ray diffraction of varying the temperature .

采用XY模型和蒙特卡罗方法对有序无序型铁电体的自发极化行为以及相变特征进行了计算机模拟研究，得到了与实验报道及理论研究符合良好的结果。

The spontaneous polarization and phase transition in order-disorder ferroelectric crystal was studied using Monte Carlo computer simulation . Our study has been developed in the framework of the X Y model with nearest neighbor interaction .

从Ginzburg-Landau方程出发，引入自发极化梯度项，研究了铁电双层膜的电滞回线，采用平均极化来反映膜的性质。

Add the term of self-polarization-gradient to the equation of Ginzburg-Landau , this paper has studied the hysteresis loop of ferroelectric bilayers , and adopted the average polarization to reflect the character of the bilayers .

Franz-Keldysh效应随阱厚的增加而加强；压电极化和自发极化形成的内电场在空间上将电子和空穴隔开，但电子和空穴波函数的交叠允许它们在较低的能级上辐射复合；

Franz-Keldysh effect well enhanced with thickness increasing , inner electrical field induced by piezoelectricity and spontaneity polarization separated electron and hole spatially , radicalization recombination occured at lower energy level because of wave function overlap of electron and hole ;

储存环上电子的电磁辐射会导致束流自发极化的建立。

An electron beam gets spontaneously polarized in the storage ring .

电气石是一种具有自发极化性质的矿物材料，具有独特的电磁学性能。

Tourmaline has the properties of spontaneous polarizing and especial electromagnetism .

电子储存环上束流自发极化的研究及应用

Study on Beam Polarization and It 's Applications on Electron Storage Ring

铁电体的自发极化是铁电材料的一个重要特性。

The spontaneous polarization is an important feature of ferroelectrics .

电气石的自发极化效应在环境与健康领域的应用

Permanent Spontaneous Polarization of Tourmaline and its Application to Environment and Health Field

电气石自发极化特性的研究及发展现状

Present situation of tourmaline research and development on the effect of spontaneous polarization

自发极化强度的计算值与实验值较好的吻合。

The calculated spontaneous polarizations were in reasonable agreement with the experimental values .

切应变会增加平面内的自发极化但是降低了平面外自发极化。

In-plane shear strain increases the in-plane spontaneous polarization but reduces the out-of-plane spontaneous polarization .

利用电子束轰击和扫描成像手段，首此观察到了电气石的自发极化导致的电极性。

The spontaneous polarity was firstly observed by electron-beam bombardment and scanning electron microscope ( STM ) .

氮化物半导体耦合量子阱中非线性光整流特性：压电效应与自发极化效应

Properties of Nonlinear Optical Rectification in Nitride Semiconductor Coupling Quantum Wells : Effects of Piezoelectricity and Spontaneous Polarization

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 existence of domain walls reduces both the spontaneous polarization and the Curie temperature , and increases the critical size .

界面层的存在使介电系数、自发极化、矫顽电压、漏电流都与薄膜的厚度有关。

Dielectric constant polarization coercive voltage and leakage current have relations with the thickness of thin films because of the interface layer .

同时，这些缺陷的产生并不显著改变体系的自发极化强度，对体系的极化翻转过程也基本没有影响。

The creation of defects does not change the spontaneous polarization of the system significantly , and the polarization reversal also changes little .

讨论了具有开边界六顶角模型的关联函数，计算了涉及边界自发极化的边界关联函数，得到了它们的行列式表示。

The six-vertex model with open boundary conditions is discussed . The correlation functions for the model are calculated and expressed as some determinants .

实验结果表明：在避免失去自发极化的适宜工况条件下，可以直接实现连续的热释电转换循环；

Experimental results show that the continuous pyroelectric conversion cycle can be directly realized under the proper conditions without the loss of spontaneous polarization .

不考虑储存环上的退极化效应，电子储存环上束流的自发极化可以高达92.38%。

Without considering depolarization effects , the equilibrium polarization could be as high as 92.38 % for the electron beam in a storage ring .

实验结果表明：调制速率随自发极化强度的提高而增加，随转动粘滞系数、液晶薄膜厚度的提高而减慢。

The simulation results show that the response velocity quickens as spontaneous polarization increases and rotational viscosity as well as thickness of liquid crystal film decreases .