Crystallization kinetics of glassy Se90In10-xAgx alloys: Observation of Mayer-Neldel rule

Karishma Singh, Neeraj Mehta, Sudhir Sharma, Ashok Kumar
2016 Processing and Application of Ceramics  
Glassy alloys of Se 90 In 10-x Ag x were prepared using melt quenching technique. Non-isothermal differential scanning calorimetric (DSC) studies were done on Se 90 In 10-x Ag x (x = 0, 2, 4, 6, 8 at.%) glassy alloys at four different heating rates (β = 5, 10, 15, 20°C/min). Well defined endothermic and exothermic peaks were obtained at glass transition (T g ) and crystallization temperature (T c ), respectively. Augis and Bennett's method was used to obtain the composition dependent
more » ... ependent crystallization activation energy (E c ) and the pre-exponential factor (η 0 ) of the Arrhenius expression. A linear dependence between ln η 0 and E c was observed showing the existence of compensation effects of the Meyer-Neldel type. These compensation effects confirm the applicability of Meyer-Neldel (MN) rule for the non-isothermal crystallization in the present case.
doi:10.2298/pac1603137s fatcat:hjgbrdgw25hsfftvqq74ee3ccy