. . "N" . . "Pustkov\u00E1, Pavla" . "CZ - \u010Cesk\u00E1 republika" . "Study of Structural Relaxation of Ge-Se and Ge-S Chalcogenide Glasses"@en . "545266" . . "25310" . . . . "[97707AAD4219]" . . "151-167" . . "Byla studov\u00E1na strukturn\u00ED relaxace ve vztahu k viskozitn\u00EDmu chov\u00E1n\u00ED podchlazen\u00FDch tavenin. Objemov\u00E1 a entalpick\u00E1 relaxace GeySe100-y (y = 0,8 a 10) a GeyS100-y (y = 38 a 40) skel byla studov\u00E1na pomoc\u00ED d\u00E9lkov\u00E9 dilatometrie, rtu\u0165ov\u00E9 dilatometrie a kalorimetrie. Objemov\u00E1 i entalpick\u00E1 relaxace byly studov\u00E1ny za izotermn\u00EDch i neizotermn\u00EDch podm\u00EDnek. Bylo zji\u0161t\u011Bno, \u017Ee \u010Dasy pot\u0159ebn\u00E9 k dosa\u017Een\u00ED rovnov\u00E1hy jsou pro objemov\u00E9 a entalpick\u00E9 relaxa\u010Dn\u00ED experimenty prakticky shodn\u00E9. Relaxa\u010Dn\u00ED chov\u00E1n\u00ED studovan\u00FDch chalkogenidov\u00FDch skel bylo pops\u00E1no pomoc\u00ED Tool-Narayanaswamy-Moynihanova modelu a byly t\u00E9\u017E ur\u010Deny parametry tohoto modelu ? zd\u00E1nliv\u00E1 aktiva\u010Dn\u00ED energie, parametr neexponenciality, parametr nelinearity x a p\u0159edexponenci\u00E1ln\u00ED faktor A. Objemov\u00E1 i entalpick\u00E1 relaxace byly uspokojiv\u011B pops\u00E1ny pro stejnou sadu TNM parametr\u016F. Bylo zji\u0161t\u011Bno, \u017Ee zd\u00E1nliv\u00E1 aktiva\u010Dn\u00ED energie TNM modelu je pro studovan\u00E9 materi\u00E1ly bl\u00EDzk\u00E1 aktiva\u010Dn\u00ED energii visk\u00F3zn\u00EDho toku."@cs . . "3"^^ . . "The structural relaxation of chalcogenide glasses related to the viscosity behaviour of their undercooled liquids was studied. The volume and enthalpy relaxation of GeySe100-y (y =0,8 and 10) and GeyS100-y (y = 38 and 40) glasses was studied by using length dilatometry, mercury dilatometry and calorimetry. Both volume and enthalpy relaxation were studied under isothermal and non-isothermal conditions. It was found that the equilibrium time scale of relaxation experiments are practically same for both volume and enthalpy relaxation. Relaxation behaviour of studied chalcogenide glasses was described by Tool-Narayanaswamy-Moynihan model and the parameters of this model (effective activation energy, parameter of non\u00ADexponentiality, parameter of nonlinearity x and pre\u00ADexponencial factor A) were determined. The volume and enthalpy relaxation can be sufficiently well predicted by using the same set of TNM parameters. The effective activation energy of TNM model is close to the activation energy of viscous"@en . "M\u00E1lek, Ji\u0159\u00ED" . "S, Z(MSM0021627501)" . . . "RIV/00216275:25310/05:00003006" . "Svoboda, Roman" . . "RIV/00216275:25310/05:00003006!RIV08-MSM-25310___" . . "Scientific Papers of the University of Pardubice, Series A" . "4"^^ . "The structural relaxation of chalcogenide glasses related to the viscosity behaviour of their undercooled liquids was studied. The volume and enthalpy relaxation of GeySe100-y (y =0,8 and 10) and GeyS100-y (y = 38 and 40) glasses was studied by using length dilatometry, mercury dilatometry and calorimetry. Both volume and enthalpy relaxation were studied under isothermal and non-isothermal conditions. It was found that the equilibrium time scale of relaxation experiments are practically same for both volume and enthalpy relaxation. Relaxation behaviour of studied chalcogenide glasses was described by Tool-Narayanaswamy-Moynihan model and the parameters of this model (effective activation energy, parameter of non\u00ADexponentiality, parameter of nonlinearity x and pre\u00ADexponencial factor A) were determined. The volume and enthalpy relaxation can be sufficiently well predicted by using the same set of TNM parameters. The effective activation energy of TNM model is close to the activation energy of viscous" . . "volume relaxation; enthalpy relaxation; TNM model; chalcogenide glasses"@en . "\u010Ci\u010Dmanec, Pavel" . "1211-5541" . "Study of Structural Relaxation of Ge-Se and Ge-S Chalcogenide Glasses" . "Studium strukturn\u00ED relaxace Ge-Se a Ge-S chalkogenidov\u00FDch skel"@cs . . . "Study of Structural Relaxation of Ge-Se and Ge-S Chalcogenide Glasses"@en . "Study of Structural Relaxation of Ge-Se and Ge-S Chalcogenide Glasses" . . "11" . "Studium strukturn\u00ED relaxace Ge-Se a Ge-S chalkogenidov\u00FDch skel"@cs . "17"^^ .