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The influence of the Fe 2 O 3 content on the Raman spectra of sapphires
Author(s) -
Phan D. T. M.,
Häger T.,
Hofmeister W.
Publication year - 2017
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5043
Subject(s) - raman spectroscopy , corundum , electron microprobe , sapphire , analytical chemistry (journal) , content (measure theory) , chemistry , mineralogy , physics , optics , environmental chemistry , mathematical analysis , laser , mathematics
In this paper, we study the influence of the Fe 2 O 3 content on the Raman spectra of sapphires by confocal micro Raman spectroscopy and Electron Probe Micro Analysis (EPMA) on a wide variety of sapphire samples collected from 18 different mining regions. Almost all of the samples have a basaltic origin, which is often characterized by a high Fe 2 O 3 content. The Raman peak positions of the two peaks at 418.3 cm −1 and 577.7 cm −1 shift in the investigated area linearly with the Fe 2 O 3 content. This correlation can be applied in, for example, estimating the Fe 2 O 3 content in sapphire or corundum in general and contributes in distinguishing sapphires from different origins. Copyright © 2016 John Wiley & Sons, Ltd.