Absorption spectrum of Cr3+ in calcium tartrate tetrahydrate |
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| Authors: | P.P. Reddy Y.P. Reddy |
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| Affiliation: | Department of Physics, S.V. University, Tirupati - 517502, India |
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| Abstract: | Calcium tartrate tetrahydrate single crystals doped with Cr3+ ions are grown from silica gel. The optical absorption spectrum is studied at the laboratory and liquid nitrogen temperatures. From the analysis of the unpolarised and polarised spectra, the site symmetry of the Cr3+ ion is attributed to octahedral with a small tetragonal distortion. The following crystal field parameters are evaluated.B = 655 cm-1C = 2948 cm-1Dq = 1800 cm-1Dt = 40 cm-1 |
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