Comment on ferroelectricity in Bis(imidazolium) L-tartrate

Abstract

Ferroelectric properties verified: Recent results presented for the complex of imidazole and L-tartaric acid are based on improper analysis and interpretation of the experimental dielectric and crystallographic data. In particular, it has now been shown that a ferroelectric-to-paraelectric phase transition in this compound occurs at 351 K, namely at a temperature 100 K higher than reported previously. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.