High switchable dielectric phase transition originating from distortion in inorganic-organic hybrid materials (H2dabco-C2H5) [MIICl4] (M = Co, Zn)

被引：31

作者：

Ji, Qin ^{[1
]}

Li, Linhai ^{[1
]}

Deng, Siyu ^{[1
]}

Cao, Xingxing ^{[1
]}

Chen, Lizhuang ^{[1
]}

机构：

[1] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Peoples R China

来源：

DALTON TRANSACTIONS | 2018年 / 47卷 / 16期

基金：

中国国家自然科学基金;

关键词：

ORGANOMETAL HALIDE PEROVSKITES; FERROELECTRIC THIN-FILM; SOLAR-CELLS; TEMPERATURE; BIS(PERCHLORATE); TRANSFORMATION; PERCHLORATE; MEMORIES; BEHAVIOR; COMPLEX;

D O I：

10.1039/c8dt00623g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two phase transition materials (H(2)dabco-C2H5)[ZnCl4] and (H(2)dabco-C2H5)[CoCl4 were synthesized and characterized. Differential scanning calorimetry detected that the two compounds underwent reversible phase transitions at 245 K and 261 K, respectively. The temperature dependence of the dielectric measurements also confirmed the phase transition. Variable-temperature single-crystal X-ray diffraction suggested that the two compounds underwent the same phase transitions from the space group Pnma to P2(1)/c but at different temperatures. Symmetry breaking occurred with an Aizu notation of mmmF2/m. The structural phase transitions of 1 and 2 were ascribed to the distortion of a [H(2)clabco-C2H5](2+) cation from inorganic-organic hybrid materials (H(2)dabco-C2H5)[(MCl4)-Cl-II] (M = Zn, Co). The strong variations of dielectric anomaly made compounds 1 and 2 applicable for use in promising switchable dielectric materials.

引用

页码：5630 / 5638

页数：9

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