Study of Co2+ in different crystal field environments

We consider the ESR of Co2+ in different environments: in an regular octahedron (Co2+ in a MgO crystal), in a deformed octahedron (Co2+ in single crystals and powder samples of NH4NiPO4.6H2O) or in a trigonal bipyramid (Co2+ in powders of Co2(OH)PO4 and Co2(OH)AsO4). We study the effect of the non-c...

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Bibliographic Details
Published in:Brazilian journal of physics 2006-03, Vol.36 (1a), p.40-54
Main Authors: Foglio, M. E., Barberis, G. E.
Format: Article
Language:English
Subjects:
PHYSICS, MULTIDISCIPLINARY
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Summary:We consider the ESR of Co2+ in different environments: in an regular octahedron (Co2+ in a MgO crystal), in a deformed octahedron (Co2+ in single crystals and powder samples of NH4NiPO4.6H2O) or in a trigonal bipyramid (Co2+ in powders of Co2(OH)PO4 and Co2(OH)AsO4). We study the effect of the non-cubic crystal fields in the ESR of Co2+ in the deformed octahedron, by employing the normal modes of this structure to simplify the systematic study of the effect of these fields. A similar study was done for the deformed trigonal bipiramid, and it was necessary to derive the normal modes of this complex that are relevant to our problem.
ISSN:0103-9733
1678-4448
0103-9733
DOI:10.1590/S0103-97332006000100010