We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Influence of Polarization Rate and Dielectric Loss on ER Effects.
- Authors
Qiu, Z. Y.; Zhang, H.; Tang, Y.; Zhou, L. W.; Wei, C. G.; Zhang, S. H.; Korobko, E. V.
- Abstract
A simplified model is considered to describe the resistive transport and diffusion of charge carriers within or around an ER active particle under influence of AC electric field and temperature. The effective polarization strength, dielectric constant and dielectric loss of the particle are derived from this model. Considered the effects of shear field, the criteria for ER activity are presented as ωτ>10[sup -4], 1<d/λ<10[sup 2] and ωtau;/λ<l for ω<10³ S[sup -1]. The criteria determine the lower and upper limits of the polarization rate and dielectric loss of ER particles. The criteria are testified by the following experimental results. First, the measured lower limit of diatomite particle conductivity is 7.3×10[sup -8] S/m. Second, the shear stresses at the shear rates from 9.9 to 100 s[sup -1] at 1 kV/mm field start to rise with temperature from 25°C. Third, with decreasing shear rate or/and increasing electric field strengths the peaks of shear stress shift down the lower temperatures.
- Subjects
RHEOLOGY; POLARIZATION (Electricity); DIELECTRIC loss
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 1999, Vol 13, Issue 14/16, p1837
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979299001867