电介质
丙烷
介电常数
材料科学
介电常数
放松(心理学)
Crystal(编程语言)
介电损耗
化学
结晶学
无机化学
有机化学
光电子学
心理学
社会心理学
计算机科学
程序设计语言
作者
Shao-Xian Liu,Zhi-Xing Han,Yuan‐Bo Tong,Xiao‐Ming Ren
标识
DOI:10.1016/j.jssc.2024.124607
摘要
Herein, a new hybrid, [1,3-bis(1-methylimidazolium)propane][Pb2I6] (1), was synthesized and thoroughly characterized using microanalysis, thermogravimetric analysis (TG), differential scanning calorimetry (DSC), and powdered X-ray diffraction (PXRD) techniques. The crystal structure of 1 reveals one-dimensional face-sharing PbI6 octahedral chains composed of Pb2+ and I− ions, with the disordered 1,3-bis(1-methylimidazolium)propane dications positioned between these inorganic chains. Remarkably, 1 exhibits high dielectric permittivity (∼200) across a wide temperature range of 123–423 K. Moreover, it demonstrates a relaxation-induced dielectric pulsing effect-like, characterized by a broad and temperature-independent dielectric anomaly peak around 263 K in ε'−T plots. The mechanisms responsible for the high dielectric permittivity and the origin of the relaxation-induced dielectric pulsing effect-like are further discussed through a comprehensive analysis of the variable-temperature crystal structure.
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