Premium
New assignment of crystalline and ion‐irradiated graphite phonon spectra
Author(s) -
Compagnini Giuseppe,
Baratta Giuseppe A.,
Cataliotti Rosario Sergio,
Morresi Assuntina
Publication year - 1995
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250260844
Subject(s) - raman spectroscopy , graphite , highly oriented pyrolytic graphite , ion , pyrolytic carbon , irradiation , phonon , crystal (programming language) , ion beam , spectral line , materials science , atom (system on chip) , carbon fibers , infrared , atomic physics , analytical chemistry (journal) , chemistry , optics , physics , condensed matter physics , pyrolysis , organic chemistry , astronomy , composite number , computer science , nuclear physics , embedded system , composite material , programming language , chromatography
A comparison was made between the Raman spectra of virgin and ion‐irradiated highly oriented pyrolytic graphite, relating them with their infrared spectra. Structural modifications, after ion beam irradiation at moderate ion fluences (0.2 eV per carbon atom, average deposited energy), were detected and a careful vibrational analysis was made in the light of the correlation between site and factor group symmetries of the graphite infinite crystal. This allows a new proposal for the assignment for the so‐called G and D lines of the Raman phonon spectra. Interaction effects, of the type projectile‐target, are envisaged to explain spectroscopic modifications of ion‐irradiated graphite.