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Thermal Decomposition Studies of CrxMo1-xSe2 (x=0.25, 0.50, 0.75) Single Crystals


Affiliations
1 S.S. Agrawal College of Arts, Commerce and Management, Navsari, Veer Narmad South Gujarat University-396445, Gujarat, India
2 Laxmi Institute of Technology, Sarigam, Gujarat Technological University-396155, Gujarat, India
3 Department of Physics, Sardar Patel University, Vallabh Vidyanagar-388120, Gujarat, India
 

The thermal behavior of some mixed transition metal dichalcogenides CrxMo1-xSe2 (x=0.25, 0.50, 0.75) were investigated using different thermal techniques. These include thermogravimetry (TGA), derivative thermogravimetry (DTG) and differential thermal analysis (DTA). The thermogravimetry data allowed the determination of activation energy and frequency factor. The relative thermal stabilities of the studied compounds have been evaluates in terms of composition (x) and follow the order 0.25>0.50>0.75. The DTA pattern shows a strong endothermic transition around 550K. The different kinetic parameters: entropy, enthalpy and Gibbs free energy were evaluated using Piloyan-Novikova and Coats-Redfern relations.

Keywords

Chalcogenides, Single Crystals, Thermal Analysis, Thermogravimetry (TGA).
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  • Thermal Decomposition Studies of CrxMo1-xSe2 (x=0.25, 0.50, 0.75) Single Crystals

Abstract Views: 316  |  PDF Views: 1

Authors

Priyanka Desai
S.S. Agrawal College of Arts, Commerce and Management, Navsari, Veer Narmad South Gujarat University-396445, Gujarat, India
D. D. Patel
Laxmi Institute of Technology, Sarigam, Gujarat Technological University-396155, Gujarat, India
A. R. Jani
Department of Physics, Sardar Patel University, Vallabh Vidyanagar-388120, Gujarat, India

Abstract


The thermal behavior of some mixed transition metal dichalcogenides CrxMo1-xSe2 (x=0.25, 0.50, 0.75) were investigated using different thermal techniques. These include thermogravimetry (TGA), derivative thermogravimetry (DTG) and differential thermal analysis (DTA). The thermogravimetry data allowed the determination of activation energy and frequency factor. The relative thermal stabilities of the studied compounds have been evaluates in terms of composition (x) and follow the order 0.25>0.50>0.75. The DTA pattern shows a strong endothermic transition around 550K. The different kinetic parameters: entropy, enthalpy and Gibbs free energy were evaluated using Piloyan-Novikova and Coats-Redfern relations.

Keywords


Chalcogenides, Single Crystals, Thermal Analysis, Thermogravimetry (TGA).

References