The relaxation of the nonlinear dielectric effect
作者： Jerzy Maz.xl;lecki
DOI: 10.1016/S0022-2860(97)00118-X
关键词: Thermodynamics 、 Debye model 、 Relaxation (NMR) 、 Chemistry 、 Dielectric 、 Chemical reaction 、 Physical chemistry 、 Spin–spin relaxation 、 Intramolecular force 、 Reaction rate constant 、 Cole–Cole equation
摘要: Abstract The nonlinear dielectric effect of polar liquid contains two main contributions—the negative change ( Δe L CH > 0) related to shift in molecular equilibria present the sample—the chemical effect. Both contributions reveal specific relaxations observed usually well separated frequency regions. Relaxation Langevin takes place close orientation relaxation time τ or ) and is described by functions. In this case third harmonic contribution can also be observed. reaction, e.g. leading formation very labile complexes, intramolecular conformations so on, separate bands. first region pure Debye model associated rate a given reaction. experimentally determined used calculate constants fast equilibria. second band occurs similar
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