Nonlinear dielectric effect of dipolar fluids.
Nonlinear dielectric effect of dipolar fluids.
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偶极流体的非线性介电效应。
DOI：
10.1063/1.3248242
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Siegfried Dietrich
中科院分区：
文献类型：
--
作者：
István Szalai;S. Nagy;Siegfried Dietrich;Siegfried Dietrich
在硬核偶极Yukawa流体的平均球近似下研究了偶极流体的非线性介电效应。基于早期的结果的电场依赖性的极化，我们的分析结果表明，所谓的正常饱和效应，这是在良好的协议与相应的NVT系综蒙特卡罗（MC）模拟数据。从MC模拟获得的线性和非线性介电常数的波动的总的偶极矩的系统中没有施加电场的情况下，确定。我们比较MSA的理论结果与相应的Langevin和Debye-Weiss行为和实际的实验数据。
The nonlinear dielectric effect for dipolar fluids is studied within the framework of the mean spherical approximation (MSA) of hard core dipolar Yukawa fluids. Based on earlier results for the electric field dependence of the polarization our analytical results show so-called normal saturation effects, which are in good agreement with corresponding NVT ensemble Monte Carlo (MC) simulation data. The linear and the nonlinear dielectric permittivities obtained from MC simulations are determined from the fluctuations of the total dipole moment of the system in the absence of an applied electric field. We compare the MSA based theoretical results with the corresponding Langevin and Debye-Weiss behaviors and with actual experimental data.