IRTUM – Institutional Repository of the Technical University of Moldova

Analiza legii de dispersie a fononilor în cristalul cvasiunidimensional TTT2I3

Show simple item record

dc.contributor.author NICIC, Veaceslav
dc.date.accessioned 2019-12-06T09:45:17Z
dc.date.available 2019-12-06T09:45:17Z
dc.date.issued 2012
dc.identifier.citation NICIC, Veaceslav. Analiza legii de dispersie a fononilor în cristalul cvasiunidimensional TTT2I3. In: Telecommunications, Electronics and Informatics - ICTEI 2012: proc. of the 5th intern. conf., Technical University of Moldova, May 11-13, 2012. Chișinău, 2012, Vol. 1, pp. 291-294. ISBN 978-9975-45-082-9. en_US
dc.identifier.isbn 978-9975-45-082-9
dc.identifier.uri http://repository.utm.md/handle/5014/7326
dc.description.abstract The paper presents a theoretical study of the crystalline vibration spectrum in the quasi-one-dimensional organic crystal of the Tetratiotetracene-Iodide (TTT2I3). The dynamic matrix and the dispersion equation are obtained for the cases when both the first and second coordination spheres were taken into consideration. For simplicity the plane model of the lattice is used, the Ox axis being directed along the molecular chains. The numerical calculations are carried out with the help of package Mathematica, taking into account the quasi-one-dimensional crystal proprieties. For the second sphere of coordination only the central forces are taken into consideration, being introduced a single additional quasi-elastic coefficient. The numerical data are analyzed and the graphs of the longitudinal and transverse frequency dependence as functions of wave vectors oriented along the directions Ox and Oy are built up. The vibration spectra for fixed values of the wave vector in the direction Oy in the cases of first and second coordination sphere are presented too. en_US
dc.language.iso ro en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject cristale organice en_US
dc.subject cristale cuasiunidimensionale en_US
dc.subject spectrul vibraţiilor en_US
dc.subject vibraţii en_US
dc.subject matrice dinamice en_US
dc.subject vectori de undă en_US
dc.subject ecuaţii de dispersie en_US
dc.title Analiza legii de dispersie a fononilor în cristalul cvasiunidimensional TTT2I3 en_US
dc.type Article en_US


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States

Search DSpace


Browse

My Account