Abstract
Pristine fractured surfaces of chalcopyrite (CuFeS2) have been studied using Synchrotron Radiation X-ray Photoelectron Spectroscopy and conventional X-ray Photoelectron Spectroscopy. These high-resolution spectra reveal for the first time three distinct contributions to the S 2p spectrum. The main symmetric peak is located at 161.33 eV and is likely derived from fully coordinated bulk S atoms. A core-level shifted peak was observed at 160.84 eV and is attributed to surface monomeric species (S2-). A second broad contribution at 161.88 eV likely represents surface polymeric species (Sn2-). The data suggest that surface polymers form where S-terminated surfaces such as the (1̄11) plane are exposed during fracture.
Original language | English |
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Pages (from-to) | 1026-1032 |
Number of pages | 7 |
Journal | American Mineralogist |
Volume | 89 |
Issue number | 7 |
DOIs | |
Publication status | Published - Jul 2004 |
Externally published | Yes |