where β is heating rate and R is gas constant. From the experimental data a graph between View the MathML source versus (1000/Tp) was plotted, slope of this graph gives the activation energy of crystallization. The Kissinger plot for activation energy of BaY, BaLa, BaAl and BaCr glasses is shown in Fig. 2. The highest activation energy is observed in BaCr glass followed by BaAl, BaY and BaLa glasses as summarized in Table 1. It is observed that the as prepared BaCr glass exhibit small portion of unreacted crystalline Cr2O3 phase which is described in next section.