作者:Evgeniy V. Bogdanov、Maxim S. Molokeev、Mikhail V. Gorev、Andrey V. Kartashev、Natalia M. Laptash、Igor N. Flerov
DOI:10.1016/j.jfluchem.2021.109748
日期:2021.5
order phase transition Cmcm ↔ P21/m at T0 = 200 K. The structure of the initial and distorted phases is ordered. The phase transition is associated with displacements of fluorine atoms, which leads to minor rotations of the CdF7 and ZrF7 pentagonal bipyramids. A small change in entropy, 0.1R, is characteristic of displacive-type transformations. An anomalously high susceptibility of the transition temperature
透视,RbCdZrF的量热和膨胀的研究7揭示了第二阶相变的存在CMCM ↔ P 2 1 /米在Ť 0 = 200 K.初始和扭曲相的结构是有序的。相变与氟原子的位移有关,氟原子的位移导致CdF 7和ZrF 7五角双锥的轻微旋转。熵的小变化0.1 R是位移型转换的特征。发现转变温度对静水压力异常高的敏感性。