Absorption spectra of Cu2+ in azurite |
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Authors: | B.J. Reddy K.B.N. Sarma |
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Affiliation: | Spectroscopic Laboratories, Department of Physics, S.V. University, Tirupati-517 502, India |
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Abstract: | EPR and optical absorption studies in azurite have been carried out at room and low temperatures. The EPR spectrum reveals that the ground state for Cu2+ ion is 2B1. Peak to peak linewidth of EPR spectrum is calculated (ΔHp = 76 G) and found to be close with the observed value. The Cu2+ ion situated in D4h symmetry with spin-orbit interaction exhibits bands at 11,806, 16,484, 17,952 and 19,793 cm?1. The tetragonal field parameters are calculated to be Ds = ? 3364 cm?1 and Dt = ? 604 cm?1. The crystal field splitting parameter is found to be Dq = ? 1175 cm?1. |
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