| Articolul precedent |
| Articolul urmator |
 |
 563 10 |
| Ultima descărcare din IBN: 2023-06-12 12:46 |
 SM ISO690:2012ZALAMAI, Victor, SYRBU, Nicolae, BEJAN, Nicolae, HIRJEU, I.. Raman and infrared vibrational spectra of PbGa2S4 crystal. In: Materials Science and Condensed Matter Physics, Ed. 8-th Edition, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, Editia 8, p. 114. ISBN 978-9975-9787-1-2. |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
| Materials Science and Condensed Matter Physics Editia 8, 2016 |
||||||
|
Conferința "International Conference on Materials Science and Condensed Matter Physics" 8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016 | ||||||
|
||||||
| Pag. 114-114 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
Raman scattering spectra in different geometries at temperatures 10 - 300 K and infrared vibrational spectra in polarizations EIIc and EIc for range 50 - 4000 cm-1 at 300 K were investigated for PbGa2Se crystals. Contours of reflection spectra in polarizations EIIc and EIc were calculated and parameters of phonons and dielectric constants were determined. Temperature dependences of Raman spectra were investigated and soft modes with different temperature dependences in intervals 80 - 150 and 150 - 370 K were discovered. A group of lines attributed to Davydov multiplets was found out and their polarization dependences temperature changes were investigated. Effective ion charges were calculated and a polarizability of ionic charges of Pb, Ga and S in PbGa2S4 lattice was determined. |
||||||
|
|
|
|
