Growth and thermal kinetics of pure and cadmium doped barium phosphate single crystal |
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Authors: | Shivani Suri K K Bamzai Vishal Singh |
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Institution: | (1) Department of Physics and Electronics, Crystal Growth and Materials Research Laboratory, University of Jammu, Jammu, 180006, India; |
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Abstract: | Non-isothermal kinetic parameter of pure and cadmium-doped barium phosphate single crystal grown by room temperature solution
technique have been investigated. Single crystal X-ray diffraction establishes grown crystal to be orthorhombic in nature.
Scanning electron microscopy supplemented with energy dispersive X-ray analysis was used to study the surface features and
to find the exact stoichiometric composition of the grown crystal. Fourier transform infrared spectroscopy studies confirm
the presence of various functional groups. The effect of cadmium doping on pure barium phosphate single crystal was studied
using thermogravimetry analysis. Thermogravimetry studies shows that the pure crystal was stable up to a temperature of 330 °C
whereas doped crystal was stable up to a temperature of 240 °C, i.e., pure crystals were more stable than doped ones. Various
solid-state reaction kinetics, i.e., activation energy (E
a), frequency factor (Z), and entropy (ΔS*) was calculated out to find the mechanism of thermal decomposition at different stages for pure and cadmium doped barium
phosphate. |
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Keywords: | |
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