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On the spin relaxation of57Fe(III) species produced through EC-decay in diamagnetic57Co-labelled Co(III) compounds

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Abstract

Absorption Mössbauer spectra of high-spin57Fe(acac)3 incorporated in diamagnetic Co(acac)3 and in paramagnetic Mn(acac)3 and of the γ-ray irradiated (57Fe, Co) (acac)3 and (57Fe, Mn) (acac)3 were compared with emission spectra of57Co-labelled Co(acac)3. Magnetic hfs is found in the spectra of (57Fe, Co) (acac)3 at 78 to 195 K, whereas such hfs is observed neither for the spectrum of57Co-labelled Co(acac)3 nor for that of γ-ray irradiated (57Fe, Co) (acac)3). The absence of magnetic hfs in the spectrum of diamagnetic57Co-labelled cobalt(III) compounds was ascribed to the spin-spin interaction due to the radicals produced in the vicinity of the decayed atom.

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  1. Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, Fukazawa, Setagaya, 158, Tokyo, (Japan)

    H. Sano

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  1. H. Sano
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Sano, H. On the spin relaxation of57Fe(III) species produced through EC-decay in diamagnetic57Co-labelled Co(III) compounds. J. Radioanal. Chem. 36, 105–111 (1977). https://doi.org/10.1007/BF02516257

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  • DOI: https://doi.org/10.1007/BF02516257

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