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X‐Ray Absorption Spectroscopic Studies of Chalcopyrite Mineral
Author(s) -
Hemachandran K.,
Chetal A. R.,
Joshi G.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221410211
Subject(s) - chalcopyrite , xanes , mineral , absorption edge , absorption (acoustics) , spectrograph , x ray , absorption spectroscopy , crystallography , materials science , chemistry , copper , spectral line , optics , metallurgy , physics , band gap , optoelectronics , composite material , astronomy
The X‐ray K‐absorption edge of Cu in chalcopyrite mineral is investigated using a 40 cm Cauchois‐type bent crystal X‐ray spectrograph. The study confirms the electronic configuration of chalcopyrite mineral as Cu 1+ Fe 3+ S 2 2− . The near‐edge structures (XANES) B and C observed in the K‐absorption edge of Cu in the mineral are explained on the basis of molecular orbital theory and band structure.