|Conţinutul numărului revistei|
| SM ISO690:2012|
IASENIUC, Oxana; IOVU, Mihail; GHIULNARE, A.; MESTERCA, Raluca; JDERU, A.; ENACHESCU, Marius. Micro-Raman spectra of bulk GexAsxSe1-2X chalcogenide glasses. In: Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science. 2018, nr. 4(19), pp. 545-550. ISSN 1454-9069.
|Proceedings of the Romanian Academy Series A - Mathematics Physics Technical Sciences Information Science|
|Numărul 4(19) / 2018 / ISSN 1454-9069|
In this work are reported the Micro-Raman spectra of GexAsxSe1-2x (x = 0.05÷0.30). The Micro-Raman spectra consist of three main peaks located around ν = 193 cm-1, ν = 213 cm-1, and ν = 255 cm-1. The peaks around ν = 193 cm-1 and ν = 213 cm-1 could be attributed to the vibration of GeSe bonds. The presence of the Raman peak at ν = 255 cm-1 is due to the bond-stretching vibration of the disordered Se chains and rings. With the increase of the Ge concentration this peak shifts to a higher wavenumber due to the shortening of Se chains. The peak around ν = 300 cm-1 is characteristic to Ge-Ge vibration mode. The Ge concentration slightly changes the shape of Micro-Raman spectra, mainly its ratio of the intensity.
chalcogenide glasses, Coordination number, Micro-, Raman spectra