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

0340422 - ÚACH 2010 RIV RO eng J - Journal Article
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
R&D Projects: GA ČR GA104/08/0734
Grant - others:GA SR(SK) APVV-20043505
Institutional research plan: CEZ:AV0Z40320502; CEZ:AV0Z20670512
Keywords : sulphide glasses * electrical * dielectric
Subject RIV: CA - Inorganic Chemistry
Impact factor: 0.433, year: 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.
Permanent Link: http://hdl.handle.net/11104/0005773