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the dielectric function
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  介电函数
     We have calculated the optical properties(the imaginary part of the dielectric function ε 2(ω) ,the optical absorption coefficient I(ω) ,the reflectivity R(ω) ) of tetragonal and cubic crystals of KTa 0 5 Nb 0 5 O 3 by the full potential linearized augmented plane wave method (FLAPW).
     用全电势线性缀加平面波法 (FLAPW)计算了KTa0 5Nb0 5O3四方相和立方相的光学特性 ,即介电函数虚部ε2 (ω)、光学吸收系数I(ω)和反射率R(ω) .
短句来源
     c) The dielectric function spectra show metal feature for the Σ phase Fe (1-x) Co xSi 2 samples.
     c)对于Σ相的 Fe( 1 - x) Cox Si2 样品 ,其介电函数谱呈现出明显的金属态特征。
短句来源
     b) The dielectric function spectra show a feature between the semiconductor and metal feature for the samples containing both β and Σ phase Fe (1-x) Co xSi 2;
     b)对于同时存在 β相和 Σ相的混合相 Fe( 1 - x ) Cox Si2 样品 ,其介电函数谱呈现出半导体和金属的混合态特征 ;
短句来源
     Ag/TbFeCo/Si( 100) magneto-optical films was prepared by DC-magnetron sputtering. The dielectric function of the Ag/TbFeCo/Si was measured by alterable angle Ellipsometry. Besides, the spectrum of Ag/Si Ag/TbFeCo/Si and TbFeCo/Si was compared.
     利用直流磁控溅射法制备出Ag/TbFeCo/Si(100)磁光薄膜,利用可变入射角椭圆偏振光谱仪测量了其可见光区的光学常数,给出薄膜介电函数实部和虚部随入射光子能量的变化规律,同时把Ag/Si、Ag/TbFeCo/Si和TbFeCo/Si的光谱进行了比较。
短句来源
     It's interesting to find that the dielectric function of Fe (1-x) Co xSi 2 films is strongly dependent on the phase of the films:a) The dielectric function spectra show interference peaks in the low photon energy range for the β phase Fe (1-x) Co xSi 2 samples;
     实验发现 ,Fe( 1 - x) Cox Si2 薄膜的介电函数强烈地依赖于薄膜的状态 :a)对于 β相的 Fe( 1 - x ) Cox Si2 样品 ,其介电函数谱在红外低能区呈现出干涉峰 ,对应于半导体态 ;
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  “the dielectric function”译为未确定词的双语例句
     The quantative correction to the dielectric function is about 5—10% for various materials.
     修正量在5~10%之间,其大小视材料而定。
短句来源
     With band gap correction,the real part of the dielectric function was derived from the imaginary part by Kramers-Kronig(K-K) dispersion relationship.
     经带隙校正后,由Kramers-Kronic(K-K)色散关系计算了介电函数的实部.
短句来源
     A METHOD IMPROVED TO RECKON THE DIELECTRIC FUNCTION FROM THE INCOMPLETE FAR INFRARED REFLECTION SPECTRUM
     非完整红外反射光谱中介电函数推算方法的改进
短句来源
     Applying the Drude-Sommerfeld free electron model of metal particles, and considering the contribution of the interband transitions to the dielectric function, the absorption spectra were simulated by the Maxwell-Granett theory.
     根据Drude-Sommerfeld自由电子气模型,并考虑电子带间转换对介电函数的贡献,运用Maxwell-Granett有效媒质理论模拟吸收率与入射波之间的关系.
     Born-Huang equations of lattice dynamics for the ternary mixed crystal AB_(1-x)C_x by using the random-element-isodisplacement model(REI model) were set up,and the dielectric function and the far-infrared reflectivity of lattice vibration in several ternary mixed crystals were discussed.
     采用无序元素孤立位移模型(REI mode),建立了三元混晶AB1-xCx晶格动力学的Born-Huang方程,并由此出发讨论了几种三元混晶晶格振动的介电常数和远红外反射谱。
短句来源
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  相似匹配句对
     Teaching on dielectric
     关于电介质的教学
短句来源
     (dielectric wavelength).
     (介质中波长)的基片仍是适用的。
短句来源
     The coulomb forces in dielectric
     无限大均匀介质中电荷间的相互作用力
短句来源
     The Dielectric Permittivity and Its Application
     电介质电容率及其应用
短句来源
     The function of
     睾丸激素的功能
短句来源
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  the dielectric function
The calculations are based on the exactly solved model of a sharp metal/electrolyte interface, the model of a Born sphere for the ion, and the three-mode approximation for the dielectric function of the solvent.
      
Parameters of the analytical expression used for the dielectric function ε(k) of the solvent are selected so as to reproduce the results of calculations of the ε(k) function obtained by a molecular dynamics method.
      
This effect is related to the fact that a contribution to the dielectric function of slow ions, determining the scattering amplitude, depends on both spatial and frequency dispersion.
      
The dielectric function and the electron-energy-loss function are calculated for comparison with the experimental data.
      
The dielectric function of the monolayer is expressed in terms of molecular polarizability and monolayer characteristics.
      
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By analysing the dielectric function of an interacting Bloch electron gas, the condition for the formation of acoustic plasmons (AP) as well-defined quasiparticles in metals has been derived. Discussions are given on whether this condition is satisfied for A-15 compounds, with the conclusion that the evidence for the existence of AP as a kind of quasiparticle in these compounds is insufficient until now.

本文从相互作用布洛赫电子气的介电函数出发,导出了金属中存在确定的声学等离激元的条件,并对A-15化合物是否满足这个条件作了讨论,认为在A-15化合物中声学等离激元的存在尚缺乏足够的证据。

An ellipsometric method is prcscnted for the analysis of the ion-implanted surface layer on metal. Experimental results indicate that the variation of the pseudo-imaginary part of the dielectric function can give the information about the transformation from the crystalline into amorphous state of the surface layer on rectal by ion implantation.

本文探讨了激光椭圆仪对离子注入金属表层的分析方法。实验结果表明,赝介电虚(?)值的变化可以提供金属表层由晶态到非晶态转变的信息。

The roughness at the Si-SiO2 interface has been determined by the ellipsometric spectroscopy. Several geometric forms have been used to simulate the surface irregularities. The dielectric properties of the rough layer are modelled in the effective-medium approximation by dividing the rough layer into a number of sub-layers with equal thickness. The asperity height H (normal to surface) and the correlation length L (along the surface) can be defined by best fit of the theoretically calculated multiphase reflective...

The roughness at the Si-SiO2 interface has been determined by the ellipsometric spectroscopy. Several geometric forms have been used to simulate the surface irregularities. The dielectric properties of the rough layer are modelled in the effective-medium approximation by dividing the rough layer into a number of sub-layers with equal thickness. The asperity height H (normal to surface) and the correlation length L (along the surface) can be defined by best fit of the theoretically calculated multiphase reflective ellipsometric parameters ψ_(cal), △_(cal) to the measured ellipsometric parameters ψ_(exp), △_(exp). It is found that the trend of the electric properties of the sample is consistent with the variance of its roughness. It is also found that the dielectric function of Si has some anisotropic properties at the interface.

利用椭偏反射光谱不但验证了Si-SiO_2界面是一祖糙面,而且在恰当的模拟形貌下,把这界面粗糙层等效为若干子层,用有效介质理论处理。分别得到各自的介电特性。通过多相椭偏光反射光谱的理论计算值ψ_(cal),△_(cal)与实验值ψ_(exp),△_(exp)的比较,把粗糙的高度H及相关长度L确定,把不同条件下制备的样品的粗糙度和它们的电气性能相对比,发现两者之间的趋势十分一致。同时发现,在界面上Si的介电常数具有轻度的各向异性。

 
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