Electrical methods for optimization of structural changes and defects in sulphide glasses

0340422 - ÚACH 2010 RIV RO eng J - Článek v odborném periodiku
Kalužný, J. - Pedlíková, Jitka - Zavadil, Jiří - Labaš, V. - Kubliha, M. - Kostka, Petr
Electrical methods for optimization of structural changes and defects in sulphide glasses.
Journal of Optoelectronics and Advanced Materials. Roč. 11, č. 12 (2009), s. 2053-2057. ISSN 1454-4164. E-ISSN 1841-7132
Grant CEP: GA ČR GA104/08/0734
Grant ostatní: GA SR(SK) APVV-20043505
Výzkumný záměr: CEZ:AV0Z40320502; CEZ:AV0Z20670512
Klíčová slova: sulphide glasses * electrical * dielectric
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 0.433, rok: 2009

Sulphide glasses Ge25Ga10S65 doped by ions of rare earths (Pr3+) are suitable for preparing of active optical fibres because they own low phonon energy needed for activation and rather both high value of refractive index and transparency in IR of spectrum. Suitable electrical and dielectric parameters reflect structural changes in tested glasses and aid to determine the influence of various technological parameters and admixtures. The complex electrical modulus can be used for the investigation of the structural changes of Ge25Ga10S65 glasses due to adding of Pr3+ ions. By this method the rise of clusters into glasses can be detected. The admixture begins to segregate to cluster at higher concentration (>= 3000 wt. ppm). Obtained results of the rise of the clusters agree with the observation by means of electron microscopy.
Trvalý link: http://hdl.handle.net/11104/0005773