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Issue 16, 2019
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Reversible high temperature dielectric switching in a 2H-perovskite compound: [Me3NCH2CH3]CdCl3

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Abstract

Organic–inorganic hybrid materials with a high-temperature phase transition have been widely applied as a kind of smart material. In this work, a new organic–inorganic 2H-perovskite compound, namely [Me3NCH2CH3]CdCl3 (1), is reported with a high temperature dielectric transition showing excellent reversibility and sustainability. 1 has an ABX3 hybrid perovskite structure, where A is a [Me3NCH2CH3]+ cation, B is a divalent metal atom, and X is a halogen atom. Differential scanning calorimetry (DSC) and dielectric measurements were applied for further characterization. Variable temperature single-crystal X-ray diffraction revealed that 1 crystallizes in the orthorhombic Pbca space group (No. 61) at 293 K and hexagonal P63/mmc space group (No. 194) at 363 K. The structural phase transition is primarily attributed to an ordered–disordered type resulting from the [Me3NCH2CH3]+ cations. Organic–inorganic perovskite compounds, as a result of a long exploration history and forward-looking prospects, can deepen research into molecular materials and their physical properties can be effectively optimized in the next-generation of temperature-responsive electrical switches.

Graphical abstract: Reversible high temperature dielectric switching in a 2H-perovskite compound: [Me3NCH2CH3]CdCl3

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Publication details

The article was received on 24 Dec 2018, accepted on 18 Mar 2019 and first published on 19 Mar 2019


Article type: Paper
DOI: 10.1039/C8CE02174K
Citation: CrystEngComm, 2019,21, 2669-2674

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    Reversible high temperature dielectric switching in a 2H-perovskite compound: [Me3NCH2CH3]CdCl3

    D. Sun, Y. Zhang, J. Gao, X. Hua, X. Chen, G. Mei and W. Liao, CrystEngComm, 2019, 21, 2669
    DOI: 10.1039/C8CE02174K

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