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High‐Pressure Effects in Hydrofullerene C 60 H 36 Studied by Raman Spectroscopy
Author(s) -
Meletov K.P.,
Tsilika I.,
Assimopoulos S.,
Kourouklis G.A.,
Ves S.,
Bashkin I.O.,
Kulakov V.I.,
Khasanov S.S.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200101)223:2<459::aid-pssb459>3.0.co;2-6
Subject(s) - raman spectroscopy , hydrostatic pressure , phonon , phase transition , atom (system on chip) , ambient pressure , materials science , hydrostatic equilibrium , high pressure , phase (matter) , chemistry , crystallography , condensed matter physics , thermodynamics , optics , physics , organic chemistry , quantum mechanics , computer science , embedded system
The effect of hydrostatic pressure on the Raman spectrum of hydrofullerene C 60 H 36 , at room temperature has been investigated up to 12 GPa. The samples were synthesized by means of high‐pressure hydrogenation. The pressure dependence of the phonon frequencies exhibits two reversible changes one at ∼0.6 GPa and another one at ∼6 GPa. The first may be probably related to a phase transition from the initial orientationally disordered bcc structure to an orientationally ordered one. The second one, at ∼6 GPa, is probably driven by pressure‐induced bonding of hydrogen to a carbon atom of a neighboring hydrofullerene cage.