Materials with Colossal Dielectric Constant: Do They Exist?
凝聚态物理
2009-11-07 v1
摘要
Experimental evidence is provided that colossal dielectric constants, epsilon >= 1000, sometimes reported to exist in a broad temperature range, can often be explained by Maxwell-Wagner type contributions of depletion layers at the interface between sample and contacts, or at grain boundaries. We demonstrate this on a variety of different materials. We speculate that the largest intrinsic dielectric constant observed so far in non-ferroelectric materials is of order 100.
引用
@article{arxiv.cond-mat/0201146,
title = {Materials with Colossal Dielectric Constant: Do They Exist?},
author = {P. Lunkenheimer and V. Bobnar and A. V. Pronin and A. I. Ritus and A. A. Volkov and A. Loidl},
journal= {arXiv preprint arXiv:cond-mat/0201146},
year = {2009}
}
备注
3 figures