Tunable Dielectric Switching of (Quinuclidinium)[MnCl<sub>4</sub>] Hybrid Compounds
Natalia Anna Wójcik, Dorota A. Kowalska, Monika Trzebiatowska, Ewelina Jach, Adam Ostrowski, Waldemar Bednarski, Marek A. Gusowski, Piotr Staniorowski, Agnieszka Ciżman
Abstract
Inorganic–organic hybrid QMnCl (Q = quinuclidinium) crystals were synthesized and characterized. The X-ray and variable-temperature IR/Raman analysis demonstrate that the crystals undergo a reversible structural phase transition, which originates from an order–disorder process and is related to the dynamics of the organic Q cation. Dielectric function measurements disclose a switchability between low ("OFF") and high ("ON") dielectric states centered at around 285 K. Owing to a remarkable temperature-dependent dielectric function, this type of molecular compound can represent an interesting tunable and switchable dielectric material for a diverse range of applications.