Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/134
Title: Reversible Pressure-Induced Amorphization in Solid C70-Raman and Photoluminescence Study
Authors: Narayana, Chandrabhas
Sood, A K
Muthu, D V S
Bharathi, A
Hariharan, Y
Rao, C N R
Keywords: Single-Crystals
C-60
C60
Phase
Temperature
Carbon
Transition
Dependence
Modes
Shift
Issue Date: 19-Dec-1994
Publisher: American Physical Society
Citation: Physical Review Letters 73(25), 3411-3414 (1994)
Abstract: We have studied single crystals of C70 by Raman scattering and photoluminescence in the pressure range from 0 to 3 1.1 GPa. The Raman spectrum at 3 1.1 GPa shows only a broadband similar to that of the amorphous carbon without any trace of the Raman lines of CT0. After releasing the pressure from 3 1.1 GPa, the Raman and the photoluminescence spectra of the recovered sample are that of the starting C70 crystal. These results indicate that the C70 molecules are stable up to 3 1.1 GPa and the amorphous carbon high pressure phase is reversible, in sharp contrast to the results on solid Cm. A qualitative explanation is suggested in terms of intermolecular versus intramolecular interactions.
URI: http://hdl.handle.net/10572/134
Other Identifiers: 0031-9007
Appears in Collections:Research Articles (Chandrabhas N.)

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