STRUCTURE AND GROWTH PHENOMENA OF C60 AND C70 SINGLE CRYSTALS
来源期刊:中南大学学报(英文版)1994年第1期
论文作者:Li Jing Li Xinghai Huang Kexiong Sun Minliang Huang Huan Kino N Ozawa M Kitazawa K Horiuchi H
文章页码:3 - 5
Key words:C60; C70; single crystals; morphology
Abstract: C60 and C70 single crystals free from solvent contamination grew from their vapour. Large C60 crystals up to a size of about 5 mm × 3 mm × 3 mm and C70 crystals about 1 mm × 1 mm × 1 mm were obtained. C60 crystals with fee structure showed two types of morphological faces, namely {111} and {100 },frequently with twinning on {111} face. C70 crystals obtained have a hop structure with a = 10. 1 andc=16. 7 DSC and X-ray diffraction analysis indicated that C70 crystal underwent phase transition below 100 ℃ Morphological observation suggests that the growth of C60 and C70 single crystals is based on layer spreading mechanism.