Optical absorption and EPR studies on enargite

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 2 B 1g since g 11 >g ⊥ (2.54>2.11). Three characteristic bands obser...

Full description

Saved in:
Bibliographic Details
Published in:Radiation effects and defects in solids 2006-11, Vol.161 (11), p.645-651
Main Authors: Lakshmi Reddy, S., Gangi Reddy, N. C., Siva Reddy, G., Jagannadha Reddy, B., Frost, R. L.
Format: Article
Language:English
Subjects:
Electron paramagnetic resonance
Enargite
Near-infrared spectroscopy
Optical absorption
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 2 B 1g since g 11 >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, 2 B 1g → 2 A 1g , 2 B 1g → 2 B 2 and 2 B 1g → 2 E g , respectively, of Cu(II) ion in the tetragonal field. The presence of Fe(II) bands is an evidence for iron impurities in the mineral.
ISSN:1042-0150
1029-4953
DOI:10.1080/10420150600903342