Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5441582 | Journal of Science: Advanced Materials and Devices | 2017 | 16 Pages |
Abstract
Samples of the empirical formula K2+Nix2+Co1âx2+SO42â
6H2O were grown with a partial occupation of the cations Co and Ni. Mixed crystals with good optical quality were obtained by the slow evaporation growth method. In the decomposition process, these crystals suffer a mass loss of approximately 24%, equivalent to water molecules forming octahedral coordination ions of Ni and Co. The optical characteristics of the grown crystals were measured where transmittance reached more than 80% in the wavelength range of 190-390Â nm. By Raman spectroscopy, the vibrational modes of SO42â, H2O and of the octahedral Ni(H2O)6 and Co(H2O)6 were identified.
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Authors
Tiago S. Pacheco, Santunu Ghosh, Michelle de Oliveira, Ananias A. Barbosa, Genivaldo J. Perpétuo, Carlos J. Franco,