Switchable dielectric behavior induced by a disorder-order structural phase transition in (C3H12N2)2(HSO4)2[Mn(H2O)4(SO4)2]

被引：5
作者：
Xu, Guan-Cheng [1 ]
Chen, Chun-Hong [1 ]
Zhang, Li [1 ]
机构：
[1] Xinjiang Univ, Key Lab Energy Mat Chem, Key Lab Adv Funct Mat, Minist Educ,Inst Appl Chem, Urumqi 830046, Xinjiang, Peoples R China
来源：
POLYHEDRON | 2016年 / 117卷
基金：
中国国家自然科学基金;
关键词：
Hybrid material; Crystal structure; Phase transition; Dielectric; Protonated amine; INORGANIC HYBRID COMPOUND; CRYSTAL-STRUCTURE; THERMAL-BEHAVIOR; BIS(SULFATE); FERROELECTRICS; FRAMEWORKS;
D O I：
10.1016/j.poly.2016.05.020
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The inorganic-organic hybrid compound (C3H12N2)(2)(HSO4)(2)[Mn(H2O)(4)(SO4)(2)] (1) was synthesized under slow evaporation conditions. Differential scanning calorimetry (DSC) measurement indicated that compound 1 undergoes a reversible phase transition at 278 K with a hysteresis width of 3 K. Two-temperature single crystal X-ray diffraction data showed that the unit cell contains the (C3H12N2)(2+) cation, with discrete [Mn(H2O)(4)(SO4)(2)2](2-) and.HSO4- anions. The unit cell volume of 1 become double on decreasing the temperature. The disorder-order transformation of the C atoms of the (C3H12N2)(2+) cation may drive the structural phase transition. The dielectric permittivity of compound 1 can be switched between two states, which could be used in switchable dielectric devices. (C) 2016 Elsevier Ltd. All rights reserved.
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收藏
页码：133 / 137
页数：5
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