The crystallization kinetics of glassy Se and binary Se98M2 (M=Ag, Cd, Zn) alloys have been studied at different heating rates (5, 10, 15, 20 Kmin-1) using Differential Scanning Calorimetric (DSC) technique. The crystallization temperature (Tc) is determined from exothermic peak obtained in DSC scans of present samples. The variation in peak crystallization temperature (Tc) with the heating rate (β) has been used to investigate the growth kinetics using Kissinger, Augis-Bennet and Matusita-Sakka models. The activation energy of crystallization (Ec) has been found to increase with Ag additive and to decrease with Zn and Cd additive. The value of various kinetic parameters such as rate constant (Kp), Avrami index (n), thermal stability (S) and Hruby number (Hr) have been calculated under non-isothermal mode. The maximum change in different kinetic parameters has been found after the incorporation of Ag additive.
J. Keirsse, C. Boussard-Pledel, O. Loreal, O. Sire, B. Bureau, P. Leroyer, B. Turlin and J. Lucas, “Chalcogenide Glass Fibers Used in Bio-Sensors,” Journal of Non-Crystalline Solids, Vol. 326, 2003, pp. 430-433.
S. Kumar and K. Singh, “Glass Transition Thermal Stability and Glass Forming Tendency of Se90-xTe5Sn5Inx Multi-Component Chalcogenide Glasses,” Thermochimica Acta, Vol. 528, 2012, pp. 32-37.
Ahmad, S. A. Khan, A. A. Al-Ghamdi, F. A. Al-Agel, K. Sinha, M. Zulfequar and M. Husain, “Kinetic of NonIsothermal Crystallization of Ternary Se80-xTe20Znx,” Journal of Alloys and Compounds, Vol. 497, 2010, pp. 215-220. doi:10.1016/j.jallcom.2010.03.015
P. Pradeep, N. S. Saxena, M. P. Saxena and A. Kumar, “Isothermal Crystallization Study of Se70Te28Cd2 Chalcogenide Glasses,” Physica Scripta, Vol. 54, No. 2, 1996, pp. 207-209. doi:10.1088/0031-8949/54/2/016
S. P Singh, S. Kumar and A. Kumar, “Effect of Impurity (Sb and Ag) Incorporation on the a.c. Conductivity and Dielectric Properties of a-Se70Te30 Glassy Alloy,” Physica B: Condensed Matter, Vol. 407, No. 3, 2012, pp. 457-463. doi:10.1016/j.physb.2011.11.014
M. A. M. Khan, S. Kumar, M. W. Khan, M. Husain and M. Zulfequar, “Electrical Transport Mechanisms in Glassy Se95M5 (M=Ga, Sb, Bi),” Materials Research Bulletin, Vol. 45, No. 6, 2010, pp. 727-732.
J. Sharma and A. Kumar, “Effect of Impurity (Sb and Ag) Incorporation on the a.c. Conductivity and Dielectric Properties of Glassy Se70Te30 Glassy Alloy,” Physica B: Condensed Matter, Vol. 407, 2012, pp. 457-463.
C. Dohare, N. Mehta and A. Kumar, “Effect of Some Metallic Additives (Ag, Cd, Zn) on the Crystallization Kinetics of Glassy Se70Te30 Alloy,” Materials Chemistry and Physics, Vol. 127, 2011, pp. 208-213
J. A. Augis and J. E. Bennett, “Calculation of the Avrami Parameters for Heterogeneous Solid State Reactions Using a Modification of the Kissinger Method,” Journal of Thermal Analysis, Vol. 13, 1978, pp. 283-292.
K. Matusita, T. Konatsu and R. Yokota, “Kinetics of Non-Isothermal Crystallization Process and Activation Energy for Crystal Growth in Amorphous Materials,” Journal of Materials Science, Vol.19, 1984, pp. 291-296.