Nonlinear response of permanent dipoles in a uniaxial potential to alternating fields

作     者：W. T. Coffey D. S. F. Crothers Yu. P. Kalmykov P. M. Déjardin 

作者机构：Department of Electronic and Electrical Engineering Trinity College Dublin 2 Ireland Department of Applied Mathematics and Theoretical Physics The Queens University of Belfast Belfast BT7 1NN Northern Ireland MEPS Université de Perpignan 52 Avenue Paul Alduy 66860 Perpignan Cedex France 

出 版 物：《Physical Review E》 (物理学评论E辑：统计、非线性和软体物理学)

年 卷 期：2005年第71卷第6期

页      面：062102-062102页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

主　　题：Dielectric relaxation 

摘      要：It is shown how the existing theory of the dynamic Kerr effect and nonlinear dielectric relaxation based on the noninertial Brownian rotation of noninteracting rigid dipolar particles may be generalized to take into account interparticle interactions using the Maier-Saupe mean field potential. The results (available in simple closed form) suggest that the frequency dependent nonlinear response provides a method of measuring the Kramers escape rate (or in the analogous problem of magnetic relaxation of fine single domain ferromagnetic particles, the superparamagnetic relaxation time).