Symmetrical Analysis Phonon Modes of Crystal -Ag8SnSe6
DOI:
https://doi.org/10.15330/pcss.16.2.257-260Keywords:
argyrodite, theoretical-group analysis, phonon spectra, selection rulesAbstract
Symmetrical analysis of the phonon spectra of lowtemperature b¢-phase of crystal Ag8SnSe6 carried out. At the room temperature argyrodite Ag8SnSe6 belong to orthorhombic system with space group symmetry Pmn21. Classification of the main phonon modes of crystal carried out. Clarified selection rules for Raman spectra and infrared spectra.
References
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[3] Patent of Ukraine 107754. Sposіb otrimannja kristalіchnogo argіroditu Ag8SnSe6 / Chekajlo M.V., Ukrainec' V.O., Іl'chuk G.A., Ukrainec' N.A., Petrus' R.Ju. (Ukraine); zajavnik ta patentovlasnik Nacіonal'nij unіversitet “L'vіvs'ka polіtehnіka” - № a 2013 11837; zajavl. 07.10.2013 ; opubl. 10.02.2015, Bjul. № 3. - 2 s.
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[5] Ja. Dovgij, S Ternavs'ka, A Franіv, Fіzichnij zbirnik NTSh 5, 1 (2002).
[6] M. V. Chekajlo, Modifіkacіja strukturi ta vlastivostej argіroditіv Ag8SiSe6, Ag8GeSe6, Ag8SnSe6 dlja elektronіki: dis. kand. tehn. nauk: 01.04.07 / M.V. Chekajlo. – L'vіv, 2012. – 162 p.
[7] Web-source: http://www.cryst.ehu.es/cgi-bin/cryst/programs/nph-wp-list.
[8] A. Pule, Zh.-P. Mat'є, Kolebatel'nye spektry i simmetrija kristallov (Mir, Moskva, 1973).
[9] Ja. Dovgij, A. Franіv, S. Ternavs'ka, Vіsnik L'vіvs'kogo unіversitetu. Serіja fіzichna (36), 34 (2003).
