Dielectric loss in heterogeneous model systems

✍ Scribed by Beek, L. K. H. ;Booy, J. ;Looyenga, H.

• Book ID: 104747729
• Publisher: Springer
• Year: 1965
• Tongue: English
• Weight: 334 KB
• Volume: 12
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00382107

✦ Synopsis

Dielectric loss in heterogeneous model systems is studied between 60 Hz and 40 MtIz*). The systems consist of water-filled spherical polyethylene shells enclosed in paraffin wax. Experimental results are compared with \ ¥ a g n e r ' s theory, which is extended to account for interactions between neighbouring spheres. Deviations from the theoretical Maxwell-Wagner loss can be explained by two opposing effects; the observed loss appears to exceed the expected value when the spheres are large compared to the distance between the condenser plates, but interaction between adjacent spheres lowers the experimental loss. In some cases the effects, although obviously independent, may even balance leading to apparent agreement between \¥agner's original theory and the experiments described here. *) Hz stands for c/s in accordance with a recommendation made by the I.U.P.A.P" --57 --*) (1) and (2) also hold for systems of spheroidal particlesS). The factor 3 in (2) and ( 3) is then replaced b y a p a r a m e t e r n, which is a function of the ratio of axes. Details are given in refs. 3 and 6.