Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix

V. Mitsa, R. Holomb, G. Lovas, M. Veres, M. Ivanda, T. Kovach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Technologically modified g-GeS2(TiVj) glasses prepared by melt quenching from different temperatures (Ti) and with different cooling rates (Vj) were studied using Raman spectroscopy and model calculations. Differential Raman spectra {I RGeS2(TiV1)-IRGeS2(T 2V1)} showed the splitting of the main, most intensive wide-band, centered at 340 cm-1. The position of the peaks found in the differential Raman spectra near 340 and 360 cm-1 and position of the main vibrational modes in the ordinary Raman spectra of low- and high-temperature crystalline phases (α-, β-GeS2) were found to be in good agreement. Vibrational spectra of 4- and 6-member ring fragments selected from crystalline structure of β-GeS2 were also determined using model calculations. Based on rings composed of GeS4 tetrahedrons connected by corners and edges the structural interpretation of the vibrational bands of g-GeS2(TiVj) at 360, 370 and 433 cm-1 in their Raman spectra was performed. The existence of homopolar Ge-Ge and S-S 'defect' bonds in the structure of germanium disulfide glasses was proved by formation of 5-member rings. Formation of fragments of both low- and high-temperature α-, β-GeS2 crystalline phases in the structure of g-GeS2(TiVj) glasses indicates the existence of mixed medium-range ordering in g-GeS2.

Original languageEnglish
Title of host publication2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings
PublisherIEEE Computer Society
Pages7-10
Number of pages4
ISBN (Print)9789532330816
DOIs
Publication statusPublished - 2014
Event2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Opatija, Croatia
Duration: May 26 2014May 30 2014

Other

Other2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014
CountryCroatia
CityOpatija
Period5/26/145/30/14

Fingerprint

Germanium
Raman scattering
Crystalline materials
Glass
Temperature
Vibrational spectra
Raman spectroscopy
Quenching
Cooling
Defects

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Mitsa, V., Holomb, R., Lovas, G., Veres, M., Ivanda, M., & Kovach, T. (2014). Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix. In 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings (pp. 7-10). [6859522] IEEE Computer Society. https://doi.org/10.1109/MIPRO.2014.6859522

Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix. / Mitsa, V.; Holomb, R.; Lovas, G.; Veres, M.; Ivanda, M.; Kovach, T.

2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings. IEEE Computer Society, 2014. p. 7-10 6859522.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mitsa, V, Holomb, R, Lovas, G, Veres, M, Ivanda, M & Kovach, T 2014, Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix. in 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings., 6859522, IEEE Computer Society, pp. 7-10, 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014, Opatija, Croatia, 5/26/14. https://doi.org/10.1109/MIPRO.2014.6859522
Mitsa V, Holomb R, Lovas G, Veres M, Ivanda M, Kovach T. Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix. In 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings. IEEE Computer Society. 2014. p. 7-10. 6859522 https://doi.org/10.1109/MIPRO.2014.6859522
Mitsa, V. ; Holomb, R. ; Lovas, G. ; Veres, M. ; Ivanda, M. ; Kovach, T. / Spectroscopic evidence of coexistence of clusters based on low (α) and high temperature (β) GeS2 crystalline phases in glassy germanium disulfide matrix. 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014 - Proceedings. IEEE Computer Society, 2014. pp. 7-10
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