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Identifying Characteristics of Charge Transfer Transitions in Minerals

Mattson, Stepanie M. and Rossman, George R. (1987) Identifying Characteristics of Charge Transfer Transitions in Minerals. Physics and Chemistry of Minerals, 14 (1). pp. 94-99. ISSN 0342-1791. doi:10.1007/BF00311152.

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Criteria used to identify Fe^2+-Fe^3+ and Fe^2+-Ti^4+ intervalence charge transfer absorption bands in electronic spectra are reviewed and compared to the characteristics of unperturbed Fe^2+ crystal field bands and those that are intensified by interaction with Fe^3+. Band energy is the least definitive diagnostic criterion. Changes in band intensity with temperature are also of limited value. Large widths are the most reliable characteristic of charge transfer bands. New optical absorption spectra are presented for euclase, as well as 80 K spectra of rockbridgeite, babingtonite and lazulite. Comparison of optical spectra to magnetic susceptibility measurements for rockbridgeite and babingtonite provides support for recent theories regarding the effect of magnetic coupling on the variation of charge transfer intensity with temperature.

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Rossman, George R.0000-0002-4571-6884
Additional Information:© 1987 Springer-Verlag. Received November 15, 1985. We thank John S. White (Smithsonian Institution) for providing the euclase for this study. This work was funded in part by NSF grant EAR-82-12540.
Funding AgencyGrant Number
NSFEAR 82-12540
Issue or Number:1
Record Number:CaltechAUTHORS:20140226-104839454
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Official Citation:Mattson, S., & Rossman, G. (1987). Identifying characteristics of charge transfer transitions in minerals. Physics and Chemistry of Minerals, 14(1), 94-99. doi: 10.1007/bf00311152
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44013
Deposited On:26 Feb 2014 19:03
Last Modified:10 Nov 2021 16:46

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