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The Cuban chromites with a spinel structure, FeCr 2 O 4 have been studied using optical absorption and EPR spectroscopy. The spectral features in the electronic spectra are used to map the octahedral and tetrahedral co-ordinated cations. Bands due Cr 3+ and Fe 3+ ions could be distinguished from UV–vis spectrum. Chromite spectrum shows two spin allowed bands at 17390...
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