Switchable Dielectric Behavior and Order‐Disorder Phase Transition in a New Organic‐Inorganic Hybrid Compound: (CH₃NH₃)₄[InCl₆]Cl

Abstract

A new organic‐inorganic phase transition material (CH3NH3)4[InCl6]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 [InCl6]3– anion and the methylammonium cation were the main factor drove the phase transition from high temperature phase with the space group P2/m to low temperature phase with the space group P2/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.

Organic–inorganic interactions revealed by Raman spectroscopy during reversible phase transitions in semiconducting [(C2H5)4N]FeCl4

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Atomic spectrometry update – a review of advances in environmental analysis

“…Of four different chemometric methods assessed for sensitivity, precision and accuracy, the nonlinear classier articial neural networks (ANN) proved to be the most reliable method for the identication of seven sulfur minerals (bornite, chalcopyrite, covellite, chalcocite, enargite, molybdenite and pyrite) in untreated rock samples. Another study demonstrated 261 that LIBS combined with laser-induced uorescence (LIBS-LIF) had great potential in the search for high-grade uranium deposits because of the selectively enhanced intensity of the U spectrum which minimised spectral line interferences. Parameters such as the slope of the calibration curve, coefficient of determination (R 2 ) and precision (average RSD) were all signicantly better than those of conventional LIBS.…”

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

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