ANOMALOUS RELAXATION AND AC CONDUCTION IN ION CONDUCTING MATERIALS
Anomalous relaxation and dispersion in ion conducting solids is explained using our recently proposed relaxation function Φ*(t)=exp-(t/ζ)Γ*, where Γ*=(iζ)1-g, Φ is relaxation time, 0∴g.1 is an exponent and i=(?).The correlation in mobile ion migration, slow relaxation, and the physical mechanism for frequency-dependence of conduction are accomplished by means of an unusual term Γ* in polarization current J*(t). When the exponent, g=1, the polarization current is a fast relaxation process of mobile charge carriers, ncq. When exponent is 0<g<1, the polarization current is a slow relaxation process of mobile ion charge carriers, gncq, where nc is carrier density, q is charge of mobile ion. The proposed model provides better physical picture for explaining the slow relaxation process and good agreement with experimental observation.
G. GOVINDARAJ LAKSHMI VIJAYAN ODILE BOHNKE
Department of Physics, School of Physical, Chemical and Applied Sciences, PondicherryUniversity, R. Laboratoire des Oxydes et Fluorures (UMR 6010 CNRS), Université du Maine - Avenue Olivier Messiaen,
国际会议
The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)
武汉
英文
357-363
2010-05-02（万方平台首次上网日期，不代表论文的发表时间）