Phase transitions in single crystal tubes formed from C60 molecules under high pressure |
| |
| Authors: | JY Hu NN Niu GZ Piao Y Yang Q Zhao Y Yao CZ Gu CQ Jin RC Yu |
| |
| Affiliation: | 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, PR China;2. Department of Physics, School of Science, Beijing Institute of Technology, Beijing 100081, PR China;3. Key Laboratory of Rubber–Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China |
| |
| Abstract: | Pure single crystal tubes formed from C60 molecules, with a face-centered cubic (fcc) structure were fabricated by a liquid–liquid interfacial precipitation method using C60 powder. A bulk transition from fcc to a simple cubic structure and a surface transition from (1 × 1) to (2 × 2) have been observed around 246 K (bulk transition temperature TB) and 214 K (surface transition temperature TS), respectively, during the measurement of the temperature dependence of electrical resistance. The initiation of the two transitions under pressure was investigated using a piston cylinder high pressure apparatus and it was found that both TB and TS increase with increasing pressure. And the C60 molecules at the surface of the tube exhibit the same behavior of that in the bulk at a pressure of about 2.1 GPa. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
