On the crystallization kinetics of multicomponent nano-chalcogenide Se79-xTe15In6Pbx (x = 0, 1, 2, 4, 6, 8 and 10) alloys. (18th November 2020)

• Record Type: Journal Article
• Authors: Anjali, ; Patial, Balbir Singh; Bhardwaj, Suresh; Awasthi, A M; Thakur, Nagesh
• Is Part Of: Nano express. Volume 1:Number 3(2020)
• Publication Date: 2020-11-18
• Subjects: Nano-chalcogenide -- DSC -- Activation energy -- Non-isothermal -- Thermal stability; Nanotechnology -- Periodicals; Nanoscience -- Periodicals; 620.5
• DOI: 10.1088/2632-959X/abc8c7
• Languages: English
• ISSNs: 2632-959X

Abstract

Abstract: Nanotechnology continuously rises due to its potential applications. To control nano-materials design and microstructure, it is very essential to understand nucleation and crystalline growth in these materials. In this research contribution, crystallization kinetics and thermal behaviour of nano-crystalline Se79- x Te15 In6 Pb x ( x = 0, 1, 2, 4, 6, 8 and 10 at. wt%) chalcogenide alloys is analyzed through differential scanning calorimetry (DSC) process under non-isothermal conditions at four different heating rates; 5, 10, 15 and 20 °C min −1 . The examined Se-Te-In-Pb nano-chalcogenide system is prepared through melt-quenching process. Characteristic temperatures namely glass transition temperature ( T g ), onset crystallization temperature ( T o), peak temperature of crystallization ( T p ) and melting temperature ( T m ) show dependence on heating rate and composition. The various kinetic parameters such as activation energy of glass transition ( E g ), activation energy of crystallization ( E c ), reduced glass transition temperature ( T rg ), Hruby number ( K gl ), thermal stability parameters ( S and H' ) and fragility index ( F i ) are analyzed for investigated Se-Te-In-Pb nano-crystalline system. Different empirical approaches are applied to determine the apparent glass transition activation energy ( E g ) and crystallization activation energy ( E c ).