1) spontaneous polarization
自发极化
1.
The spontaneous polarization of ferroelectric films was strengthened and then weakened wi.
结果表明,随退火温度升高,(Pb,La)TiO3铁电薄膜的表面形貌表现出从粘连到结晶较好,到出现抱团的变化过程;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。
2.
The migration distance is closely related to the spontaneous polarization, the size of particle and the direction of polar axis.
结果表明 ,在SEM下用二次电子 (SE)电子束轰击电气石微粒 ,电气石微粒产生自迁移现象 ,迁移距离与自发极化强度、微粒粒径、极性轴方向等因素密切相关。
3.
In view of the pyroelectric performance of PZT95/5 ceramics during the FRL-FRH transition, an analytic formula of spontaneous polarization varying with the temperature during the phase transition was established.
针对PZT95/5陶瓷材料FRL-FRH相变时的热释电特性,建立了相变过程中自发极化随温度变化的定量计算表达式,表达式中的函数级数依据Leibniz交错级数定理,可按照实际要求的精确程度进行级数求和,故利用计算机拟合了自发极化随温度的变化曲线。
2) spontaneous polarization method
自发极化法
3) Piezoelectricity and spontaneous polarization
自发极化和压电极化
4) spontaneous polarization
自发极化强度
1.
For pyroelectrics that belongs to ferroelectrics,the relationship p/χ=Ps/C between the pyroelectric coefficient and spontaneous polarization can be obtained according to Devonshire thermodynamic model.
对属于铁电体的热释电体从德文希尔热力学理论模型出发,导出了热释电系数和自发极化强度的关系P/χ=PS/C,测量了LUTGS晶体的p/χ和PS/C分别随温度的变化曲线。
2.
The thickness dependence of the spontaneous polarization and the hysteresis loop of epitaxial PbZr_ 0.
6O3薄膜厚度对其自发极化强度、电滞回线的影响。
3.
Both transient and stable responses of FLC are given,in order to indicate the relationship between stable azimuth angle,which represent the variety of refractive index induced by electric field,and the typical parameters of FLC(like spontaneous polarization,rotational visco.
以铁电液晶材料的典型参数(自发极化强度、转动粘滞系数以及液晶薄膜厚度)为参变量,给出了稳态方位角(表征外加电场引起的铁电液晶折射率变化)与各参变量间的依赖关系,以及各参变量对调制速率的影响。
5) spin-polarized excitation
自旋极化激发
1.
According to the dispersion relation of ferromagnetic granular film from spin wave excitation and spin-polarized excitation, taking the Fe-SiO2 granular film as a case, the spin wave excitation spectrum is independent of temperature, but the spin-polarized excitation dispersion spectrum is dependent of;and both increase with the wave vector increasing which is discontinuous.
应用颗粒膜中颗粒自旋波激发和自旋极化激发的色散关系表达式,对Fe-SiO2颗粒膜进行了计算,探讨其色散规律。
6) conditional spontaneous spin polarization
条件自发自旋极化
补充资料:自发极化
分子式:
CAS号:
性质:在一定温度范围内、单位晶胞内正负电荷中心不重合,形成偶极矩,呈现象极性。这种在无外电场作用下存在的极化现象称为自发极化。当施加外界电场时,自发极化方向沿电场方向趋于一致;当外电场倒向,而且超过材料矫顽电场值时,自发极化随电场而反向;当电场移去后,陶瓷中保留的部分极化量,即剩余极化。自发极化与电场间存在着一定的滞后关系。它是表征铁电材料性质的必要条件。铁电陶瓷、压电陶瓷,如钛酸钡晶体BaTiO3等具有自发极化。利用材料的这种性质,可制作电子陶瓷,如电容器及敏感元器件。
CAS号:
性质:在一定温度范围内、单位晶胞内正负电荷中心不重合,形成偶极矩,呈现象极性。这种在无外电场作用下存在的极化现象称为自发极化。当施加外界电场时,自发极化方向沿电场方向趋于一致;当外电场倒向,而且超过材料矫顽电场值时,自发极化随电场而反向;当电场移去后,陶瓷中保留的部分极化量,即剩余极化。自发极化与电场间存在着一定的滞后关系。它是表征铁电材料性质的必要条件。铁电陶瓷、压电陶瓷,如钛酸钡晶体BaTiO3等具有自发极化。利用材料的这种性质,可制作电子陶瓷,如电容器及敏感元器件。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条