Optical absorption and EPR studies on enargite
Frost, Ray L., Reddy, S. Lakshmi, Reddy, N.C. Gangi, Reddy, B. Jagannadha, & Reddy, G. Siva (2006) Optical absorption and EPR studies on enargite. Radiation Effects and Defects in Solids, 161(11), pp. 645-651.
The behaviour of transition metal ions in enargite has been studied by electron paramagnetic resonance and absorption spectroscopy in the UV–VIS and near-IR regions. The ground state of Cu(II) ions in enargite is confirmed as 2B1g since g11>g⊥ (2.54>2.11). Three characteristic bands observed in the optical absorption spectra at 8275, 13105 and 18420 cm−1 are assigned to the transitions, 2B1g→2A1g, 2B1g→2B2 and 2B1g→2Eg, respectively, of Cu(II) ion in the tetragonal field. The presence of Fe(II) bands is an evidence for iron impurities in the mineral.
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|Item Type:||Journal Article|
|Keywords:||Enargite, Electron paramagnetic resonance, Near, infrared spectroscopy, Optical absorption|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2006 Taylor & Francis|
|Copyright Statement:||First published in Radiation Effects and Defects in Solids 161(11):pp. 645-651.|
|Deposited On:||14 Feb 2007|
|Last Modified:||29 Feb 2012 23:23|
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