Dielectric relaxation and thermodynamic studies on Se90Ge10−xInx glasses

Autor:	N.M. Shash, S. Abo El-Hassan
Rok vydání:	1997
Předmět:	Germanium compounds Chemistry Annealing (metallurgy) Enthalpy Thermodynamics General Materials Science Dielectric loss Activation energy Dielectric Frequency dependence Condensed Matter Physics Cole–Cole equation
Zdroj:	Materials Chemistry and Physics. 49:56-61
ISSN:	0254-0584
DOI:	10.1016/s0254-0584(97)80128-9
Popis:	Dielectric relaxation characteristics of Se 90 Ge 10− x In x ( x = 2,4 and 6) have been studied. The frequency dependence of the dielectric loss tangent for the three samples annealed at temperatures 393, 403 and 413 K for two periods of annealing time has been carried out. The activation energy of relaxation ( E r ) is found to be highly affected by the addition of In and it is also a function of the annealing process. Thermodynamic functions such as enthalpy (Δ H ), free energy (Δ F ) and the change in entropy (Δ S ) have been calculated as a function of annealing temperature and annealing time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5b67a86728a4fa5818c304041b00695 https://doi.org/10.1016/s0254-0584(97)80128-9 Zobrazit plný text záznamu Full Text from ScienceDirect