期刊
CHEMICAL PHYSICS LETTERS
卷 357, 期 3-4, 页码 307-313出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(02)00522-5
关键词
-
The structural stability of the rhombohedral two-dimensional (2D) polymeric phase of C-60 has been studied as a function of pressure up to similar to30 GPa at room temperature by means of in-situ Raman scattering. An irreversible transformation to a new disordered phase was observed at a pressure of similar to15 GPa. The intensity of the A(g)(2) pentagonal pinch (PP) mode rapidly decreases in the pre-transitional pressure range while the Raman spectrum of the transformed material becomes very diffuse. The high-pressure phase recovered to normal conditions is metastable and transforms under heating to a mixture of pristine and dimerized C-60 as can be seen by their Raman spectra. The retention of the fullerene molecular cage at high pressure and quenching of the PP-mode are the indications that the high-pressure phase may be associated with a random creation of new polymeric bonds between the molecules in adjacent polymeric planes of the 2D-rhombohedral phase of C-60. (C) 2002 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据