查询词典 dielectric constant

The results show that the dielectric constant and thermal expansion coefficient increased,the dielectric loss and bending strength desreased with the increasing of anorthite content.

钙长石含量大于50wt%的复合材料中α-石英和方石英的析出增加了材料的热膨胀系数，但对材料的介电性能影响不大。

In this paper, we used molecule dynamics simulation technique in researching dielectric property. By analyzing the information that is provided from molecule dynamics simulation, we can got some dielectric properties like dielectric constant and chargeability. Firstly, 3D model of silicon dioxide was been built and geometric optimization was been used to make the model more correctly. Then the model was been put in calculation of molecule dynamics simulation with a definitive temperature.

本文针对氮化硼晶体在极端高温下的介电性能开展研究，首先建立六方氮化硼晶体的微观结构模型，通过几何优化对其进行进一步的结构修正，然后选择合适的力场、系综、积分时间步长和压力温度控制方法，对微观结构模型进行某一温度下的分子动力学计算，动力学计算达到平衡后得到该温度下电介质材料的微观结构模型和动力学特性。

Of a dielectric, the product of dielectric constant and the tangent of its dielectric ''.

对于电介质来说，它是介电常数和介质''。

Abasic review on dielectric nonlinearity and electric tunable mechanism wasperformed in view of thermodynamics, ferroelectric domain, polar nanoregion,field induced phase transition, grain boundary layer and AC dielectricnonlinearity. The dielectric nonlinearity phenomena in barium stannate titanateceramics were studied and the field dependences of dielectric constant and losstangent were showed.

关于低温介电弛豫行为与极性微区关系的讨论涉及到了弛豫铁电体与扩散相变铁电体之间的相容关系，作者认为所有的扩散相变铁电体都应该是弛豫铁电体或潜在的弛豫铁电体，它们的区别仅在于能够观测到介电弛豫现象的测试频率范围不同。

The dielectric properties of homogenous BSZT and compositionally graded BSZT thin films were characterized by measuring the dielectric constant and dielectric loss as a function of applied electric field, temperature and frequency.

结果表明，通过合理设计梯度薄膜的成分分布，不仅可以实现对薄膜介电常数的调控，使其保持较高的调谐率，还可获得良好的介电常数温度稳定性。

BST doped with proper amount of La could restrain the largen of grains, improve dielectric constant and decrease dielectric loss, whereas La_4Ba_4Ti_7O_(24) raised when more La doped, and it was harmful to dielectric properties.

适量La掺入BST中，能抑制晶粒长大，增大介电常数和降低介电损耗，但La掺杂过多会产生La_4Ba_4Ti_7O_(24)相，有损介电性能。

The fluorinated carbon film will be a potential material as the IC isolation medium, and it is becoming one of the rivalrous candidate medium dielectric constant materials to instead of the SiO2 for the higher density and higher speed IC in the future because of its lower dielectric constant and good thermal stability, the film will increase the speed and efficiency of IC.

含氟碳膜是一种很有应用前景的集成电路用介质材料，其低的介电常数和较好的热稳定性使它可以取代传统的SiO_2作为致密、高速集成电路的金属互连线间的绝缘隔离层，从而提高集成电路的速度和效率。

It indicated that the multiple-layered films were mainly composed by C-F, C=C and Si-O bonging, a little Si-C and Si-F bonding were also existed because of history effect. The bondgap were calculated as 2.7eV. The dielectric constant of the multiple-layered films was close relative to the thickness of the covering layer-SiOx, so the thickness had better be reduce. The bonding configurations of multiple-layered films had no evident changes after 400癈 annealing, the thickness raise very little and the dielectric constant increase 8%. Compared with one-layered a-C:F films prepared in the same conditions, the SiOx/a-C:F/SiOx multiple-layered films had a better thermal stability.

结果表明，多层膜主要由C-F，C=C，Si-O键构成，由于器壁的历史效应，薄膜中还存在少量Si-C和Si-F键；多层膜的光学带隙经计算约为2.7eV；多层膜的介电常数与包层SiO_x厚度有很大关系，应尽可能减小SiO_x厚度；在经历200-400℃的N_2氛围中退火后，多层膜的红外结构没有发生太大的变化：膜厚度稍微增大，介电常数只增加了8％，与同样制备条件下沉积的单层a-C：F薄膜相比具有较好的热稳定性。

Recently, much attention has been paid to an unusual material CaCu_3Ti_4O_(12) because of its giant dielectric constant , The current study focus on the origin of the giant dielectric, however, its little high dielectric loss limits application, how to reduc.

近年来具有巨介电常数材料的CaCu_3Ti_4O_(12)引起了人们很大的关注，目前研究主要集中在CCTO巨介电常数的来源问题，但其较大的介电损耗限制了应用，对如何降低其介电损耗的研究很少。

Performed tests based on seven kinds of important structural parameters which were wall thickness, shielding thickness, the radial wall shielding insertion depth, the width of the radial electrode, the electrode width, the relative dielectric constant of wall material and filler shield relative dielectric constant, and studied on structural parameters and the corresponding performances by RBF neural network, the optimization based on PSO was performed with the regression model.

该方法以敏感场整体灵敏度大小等系统性能为优化目标，基于管壁厚度、屏蔽层厚度、径向屏蔽插入管壁深度、径向电极宽度、电极宽度、管壁材料的相对介电常数、屏蔽层填充物相对介电常数7种重要的结构参数进行试验。应用RBF神经网络对多组结构参数以及对应的系统性能指标进行学习，得到回归模型，并应用粒子群算法进行寻优。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。