High-pressure phase in tetragonal two-dimensional polymeric C60

被引：0
|
作者：
Meletov, KP [1 ]
Arvanitidis, J
Ves, S
Kourouklis, GA
机构：
[1] Aristotelian Univ Salonika, Sch Technol, Div Phys, GR-54006 Salonika, Greece
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia
[3] Aristotelian Univ Salonika, Dept Phys, GR-54006 Salonika, Greece
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2001年 / 223卷 / 02期
关键词：
D O I：
10.1002/1521-3951(200101)223:2<489::AID-PSSB489>3.0.CO;2-V
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The pressure behavior of the phonon modes of tetragonal two-dimensional polymeric C-60 has been studied at pressure up to 27.5 GPa and room temperature by means of Raman spectroscopy. Gradual transformation of the material to a new phase was observed in the pressure region 18.0-22.0 GPa. The Raman spectrum characteristics of the high-pressure phase provide a strong indication that the fullerene molecular cage is retained and the material map be related to a three-dimensionally polymerized C-60. The new phase remains stable upon pressure decrease down to 9 GPa. Further release of pressure leads to its transformation to a highly disordered structure whose broad features in the Raman spectrum resemble those of amorphous carbon.
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页码：489 / 493
页数：5
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