The effect of Eu and Ho on crystallisation behaviour of ZrBaYAl-fluoride glasses has been investigated in the present study. Kinetic data have been obtained by non-isothermal DSC method. The evaluation of activation energies of crystallisation has been carried out in terms of the Johnson-Mehl-Avrami equation, by the Kissinger method. The stability parameter proposed by Saad and Poulain has also been calculated. Both of these parameters indicate that Eu is an effective stabilizer in the middle of the examined dopant concentration range, while Ho is effective at higher concentrations.
Origin
University Of Veszprem, Hungary
Journal Title
Proc Of Xvi Icg, Beijing, China Vol7 1995 99-103
Sector
Special Glass
Class
S 1478