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Orientational phase transitions in C70: A Raman spectroscopic investigation

By N Chandrabhas, K Jayaram, DVS Muthu, AK Sood, Ram Seshadri and CNR Rao


Raman investigations of C70 films in the 14-370-K range show significant changes across the orientational phase transitions around 270 and 330 K. Seven of the Raman modes of C70 soften smoothly across the transitions, the magnitude of the decrease in frequencies being in the range of 2-5 cm-1. Linewidths of the bands increase in the transition region over and above the anharmonic contributions

Topics: Solid State & Structural Chemistry Unit, Physics
Publisher: The American Physical Society
Year: 1993
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