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Growth mechanism, dielectric, elastic and thermal properties of zinc cadmium thiocyanate crystal as a potential piezoelectric crystal
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2017-08-05 , DOI: 10.1016/j.cplett.2017.08.008
Yadong Lü , Xitao Liu , Xinqiang Wang , Zeliang Gao , Xin Yin , Kangkang Yuan , Chonghe Xu , Lin Wang , Guanghui Zhang , Luyi Zhu , Dong Xu

Bulk crystals of zinc cadmium thiocyanate, ZnCd(SCN)4 (ZCTC) with dimensions of 51×15×12 and 28×13×12 mm3 have been obtained. Growth habits were investigated, two-dimensional nucleation growth mechanism and crystal twinning defect were observed from the as-grown crystals. The thermal diffusivities were measured, and then thermal conductivities were calculated with values decreasing from 1.3683 to 0.8739 W⋅m-1⋅K-1 and 0.8496 to 0.5356 W⋅m-1⋅K-1 as the temperature increasing from 303 to 423K, along the a- and c- directions, respectively. The relative dielectric constants and elastic compliance constants at room temperature were determined. Meanwhile, first-principles calculation was used to calculate elastic constants.



中文翻译:

硫氰酸镉锌晶体作为潜在压电晶体的生长机理,介电,弹性和热性能

获得了尺寸为51×15×12和28×13×12 mm 3的硫氰酸锌镉的块状晶体ZnCd(SCN)4(ZCTC)。研究了晶体的生长习性,从生长的晶体中观察到了二维成核生长机理和晶体孪晶缺陷。测定了热扩散率,然后热导率用值减小从1.3683到0.8739W⋅m计算-1 ⋅K -1和0.8496到0.5356W⋅m -1 ⋅K -1当温度分别沿着a和c方向从303K升高到423K时。确定了室温下的相对介电常数和弹性柔度常数。同时,使用第一性原理计算来计算弹性常数。

更新日期:2017-08-06
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