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首页> 外文期刊>Journal of Crystal Growth >Structural, thermal and dielectric studies on a new solution grown 4-dimethylaminopyridinium dihydrogen phosphate crystal
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Structural, thermal and dielectric studies on a new solution grown 4-dimethylaminopyridinium dihydrogen phosphate crystal

机译：新型溶液生长的4-二甲基氨基吡啶二氢磷酸二氢盐晶体的结构，热学和介电研究

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摘要

Single crystals of 4-dimethylaminopyridinium dihydrogen phosphate (DMAPDP) (C7H13N2PO4) were grown by the solvent evaporation method. The three-dimensional structure was solved by the single-crystal X-ray diffraction method which belongs to triclinic crystal system and the molecular arrangements in the crystal were studied. The thermal behaviour was investigated using differential scanning calorimetry (DSC) and no phase transition was identified in the temperature region -150 to 230 degrees C. The thermal parameters-thermal diffusivity (a), thermal effusivity (e), thermal conductivity (K) and heat capacity (C,) of DMAPDP were measured by an improved photopyroelectric technique at room temperature. Dielectric constant and dielectric loss of the grown crystal were evaluated for the frequency range 1-200 KHz in the temperature region 28-135 degrees C. The Vicker's hardness was measured as 42.2 for a load of 98.07 mN. The laser induced surface damage threshold of DMAPDP crystal was found to be 4.8 GW/cm(2) with nanosecond Nd:YAG laser. (c) 2006 Elsevier B.V. All rights reserved.
机译：通过溶剂蒸发法生长了4-二甲基氨基吡啶二氢磷酸二氢甲酯（DMAPDP）（C7H13N2PO4）单晶。通过属于三斜晶系的单晶X射线衍射法解决了三维结构，研究了晶体中的分子排列。使用差示扫描量热法（DSC）研究了热行为，在-150至230摄氏度的温度范围内未发现相变。热参数-热扩散率（a），热扩散率（e），热导率（K）通过改进的光电热电技术在室温下测量DMAPDP的热容量（C，）。在28-135℃的温度区域中在1-200KHz的频率范围内评估了生长的晶体的介电​​常数和介电损耗。对于98.07mN的载荷，维氏硬度被测量为42.2。纳秒级Nd：YAG激光发现DMAPDP晶体的激光诱导表面损伤阈值为4.8 GW / cm（2）。 （c）2006 Elsevier B.V.保留所有权利。

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