Nano-Graphites and their Potassium Intercalated Compounds: Structural and Electronic Properties
作者:
B.L. V. Prasad,
Hirohiko Sato,
Toshiaki Enoki,
Yoshihiro Hishiyama,
Yutaka Kaburagi,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 340,
issue 1
页码: 793-798
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008025565
出版商: Taylor & Francis Group
关键词: Diamond-graphite conversion;Graphite nano-particles;Potassium intercalated graphite
数据来源: Taylor
摘要:
Graphite-nano particles were prepared by the heat-treatment of diamond-nano particles. Various heat-treatment temperatures in the range 900–1600°C were used. X-ray diffraction studies indicate that the onset temperature of diamond-graphite transition is around 1000°C and the complete conversion of diamond to graphite occurs at 1600°C. X-ray diffraction studies on the potassium intercalated compounds of these graphite-nano particles, while indicating the absence of staging phenomenon, show that small neutral potassium clusters are included in these intercalated compounds. The presence of neutral potassium clusters could also explain the observed magnetic susceptibilities and the large deviations in the ESR g-values of these intercalated nano-graphitic systems.
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