VIBRATIONAL-MODES, OPTICAL-EXCITATIONS, AND PHASE-TRANSITION OF SOLID C-60 AT HIGH-PRESSURES

被引：119

作者：

SNOKE, DW

RAPTIS, YS

SYASSEN, K

机构：

[1] Max-Planck-Institut f̈r Festkörperforschung, D-7000 Stuttgart 80

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.45.14419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the effect of pressure on the vibrational modes and optical response of C60 and C70 fullerene powder from several sources, via Raman spectroscopy and optical reflectivity measurements. Fullerene Raman peaks remain observable up to about 22 GPa, indicating that the fullerenes have stability comparable to that of hexagonal graphite under pressure. The Raman signal of this new phase after pressure release is that of amorphous carbon. We compare the reflectivity spectrum of this phase to that of the high-pressure phase obtained from graphite and conclude that the two high-pressure phases are different.

引用

页码：14419 / 14422

页数：4

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