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首页> 外文期刊>Physica, B. Condensed Matter >Crystal structure, ionic conductivity and dielectric relaxation studies in the (C _5H _(10)N) _2BiBr _5 compound
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Crystal structure, ionic conductivity and dielectric relaxation studies in the (C _5H _(10)N) _2BiBr _5 compound

机译:(C _5H _(10)N)_2BiBr _5化合物的晶体结构,离子电导率和介电弛豫研究

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摘要

The synthesis and crystal structure of the bis (3-dimethylammonium-1- propyne) pentabromobismuthate(III) salt are given in the present paper. After an X-ray investigation, it has been shown that the title compound crystallizes at 298 K in a centrosymmetric monoclinic system, in the space group C _2/c with the following lattice parameters a=12.9034(3) ?, b=19.4505(6) ?, c=8.5188(2) ?, β=102.449(2). Not only were the impedance spectroscopy measurements of (C _5H _(10)N) _2BiBr _5 carried out from 209 Hz to 5 MHz over the temperature range of 318 K-373 K, but also its ac conductivity evaluated. Besides, the dielectric relaxation was examined using the modulus formalism. Actually, the near values of activation energies obtained from the impedance and modulus spectra confirms that the transport is of an ion hopping mechanism, dominated by the motion of the H ~+ ions in the structure of the investigated material.
机译:本文给出了双(3-二甲基铵-1-丙)五溴代铋酸盐(III)盐的合成和晶体结构。经过X射线研究,结果显示标题化合物在中心对称单斜晶系系统中的空间K _2 / c中以298 K结晶,其晶格参数为a = 12.9034(3)β,b = 19.4505( 6),c = 8.5188(2),β,= 102.449(2)。不仅在318 K-373 K的温度范围内从209 Hz到5 MHz进行了(C _5H _((10)N)_2BiBr _5的阻抗谱测量,而且还评估了其交流电导率。此外,使用模量形式主义检查介电弛豫。实际上,从阻抗谱和模量谱获得的活化能值接近,证实了这种迁移是一种离子跳跃机制,主要由被研究材料结构中的H〜+离子的运动决定。

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