Journal
PHYSICA B-CONDENSED MATTER
Volume 383, Issue 2, Pages 188-193Publisher
ELSEVIER
DOI: 10.1016/j.physb.2006.03.009
Keywords
MREI-model; mixed crystals; SnS2-xSex; Raman and infra-red; layered compounds; phonon calculations
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Optical phonon frequencies have been calculated for 2H-polytype of layered mixed crystals in the series SnS2-xSex (0 <= x <= 2), using MREI-model. The model was modified to make it applicable in this type of series. Various force constants and the values of local and gap modes have been reported. The model successfully confirms the two-mode behavior exhibited by the series and the calculated values agree very well with experimentally observed values, reported earlier. (c) 2006 Elsevier B.V. All rights reserved.
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