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Growth, Characterization and Conductivity of Chromium Mixed Cadmium Oxalate Crystals
Author(s) -
Ponnappa Nagaraja,
Nettar Jagannatha,
Mylnahalli Hema,
D'Souza Delma,
Neratur Lokanath
Publication year - 2018
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201700261
Subject(s) - oxalate , chromium , cadmium , gravimetric analysis , crystal structure , chemistry , conductivity , metal , crystal growth , inorganic chemistry , crystal (programming language) , ion , cadmium oxide , crystallography , organic chemistry , computer science , programming language
Chromium mixed cadmium oxalate (CMCO) [Cr:Cd (C 2 O 4 ).3H 2 O] crystals are grown by gel diffusion method using silica hydro gel as growth media at ambient temperature. The optimum condition for growth is established by varying the parameters such as specific gravity, pH, gel aging, concentration of reactants and ratio of mixture C d + 2to C r + 3. Energy dispersive X‐ray spectroscopy (EDX) confirms the existence of C d + 2and C r + 3ions in the crystal lattice of CMCO. Thermo‐gravimetric analysis (TGA) reveal that, the CMCO are thermally stable up to 950 °C, which confirms the presence of three water molecules in the crystal lattice of CMCO. FT‐IR spectrum exhibits the presence of OH, carboxyl group and metal‐oxygen bonding. In this study, the occupation of vacancies of C d + 2ions by C r + 3cations in the lattice of mixed cadmium oxalate crystals without altering the morphology of the parent crystal is confirmed.