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Switchable Dielectric Behavior and Order‐Disorder Phase Transition in a New Organic‐Inorganic Hybrid Compound: (CH 3 NH 3 ) 4 [InCl 6 ]Cl
Author(s) -
Li Min,
Xu GuanCheng,
Xin WenBo,
Zhang YinQiang
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201901303
Subject(s) - chemistry , differential scanning calorimetry , phase transition , dielectric , permittivity , phase (matter) , transition temperature , space group , hysteresis , curie temperature , x ray crystallography , analytical chemistry (journal) , crystallography , inorganic chemistry , diffraction , organic chemistry , condensed matter physics , thermodynamics , materials science , optics , superconductivity , physics , optoelectronics , ferromagnetism
A new organic‐inorganic phase transition material (CH 3 NH 3 ) 4 [InCl 6 ]Cl ( 1 ), has been successfully synthesized and characterized. The compound undergoes a reversible first‐order phase transition at Curie temperature Tc=284 K, accompanied with a wide hysteresis of 12 K, which investigated by differential scanning calorimetry (DSC). The temperature dependence of the dielectric permittivity discloses an obvious step‐like dielectric anomaly. Single crystal X‐ray diffraction reveals that the order‐disorder transition of the [InCl 6 ] 3– anion and the methylammonium cation were the main factor drove the phase transition from high temperature phase with the space group P 2/ m to low temperature phase with the space group P 2/ n . This finding indicates that In‐based organic–inorganic hybrids compounds can be used to build phase transition materials, which broaden the way for exploring dielectric switching materials.