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Effect of Lithium Intercalation on Lattice Dynamics of Molybdenum Disulfide
Author(s) -
Sekine T.,
Julien C.,
Jouanne M.,
Weber M.,
Samaras I.,
Balkanski M.
Publication year - 1991
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/pssb.2221680110
Subject(s) - molybdenum disulfide , intercalation (chemistry) , raman spectroscopy , force constant , lattice constant , molybdenum , lattice (music) , molecular dynamics , lithium (medication) , materials science , chemistry , chemical physics , condensed matter physics , lattice vibration , molecular physics , computational chemistry , inorganic chemistry , molecule , phonon , physics , diffraction , composite material , organic chemistry , quantum mechanics , medicine , acoustics , endocrinology
In order to explain new peaks in the Raman spectra of MoS 2 after intercalation with Li, the lattice dynamics in Li x MoS 2 is calculated by applying the central force model. It is found that they can be attributed to new vibrational modes in which the intercalant atoms strongly vibrate against the host lattice. The force constants between Li and S atoms are much smaller than the intralayer force constants and have almost the same order value as the interlayer ones.