Revisiting the Disorder–Order Transition in 1-X-Adamantane Plastic Crystals: Rayleigh Wing, Boson Peak, and Lattice Phonons
Revisiting the Disorder–Order Transition in 1-X-Adamantane Plastic Crystals: Rayleigh Wing, Boson Peak, and Lattice Phonons
复制标题
重新审视 1-X-金刚烷塑料晶体中的无序-有序转变：瑞利翼、玻色子峰和晶格声子
DOI：
10.1021/acs.jpcc.1c00239
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发表时间：
2021
影响因子：
3.7
通讯作者：
A. Brillante
中科院分区：
文献类型：
--
作者：
T. Salzillo;A. Girlando;A. Brillante
在本文中，我们重新审视了 1-氯金刚烷的无序转变，并提出了 1-溴金刚烷的新数据。瑞利散射和拉曼活性光学晶格声子用于轻松表征相变。与 Cl 衍生物不同，Br 衍生物在环境 P、T 条件附近显示出半有序结构，这是该化合物所特有的，并且似乎是由于 Br 衍生物相对于其他卤素金刚烷的旋转无序程度降低了。半有序相的瑞利翼和玻色子峰被简要讨论。
In this paper, we revisit the disorder–order transition in 1-chloro-adamantane and present new data on 1-bromo-adamantane. Rayleigh scattering and Raman-active optical lattice phonons are used to easily characterize the phase change. Unlike Cl-derivative, the Br-derivative shows a semiordered structure in the vicinity of ambient P,T conditions, which is peculiar of this compound and seems to be due to a more reduced rotational disorder of the Br-derivative with respect to the other halogen-adamantanes. The semiordered phase is briefly discussed in terms of its Rayleigh Wing and Boson peak.