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Evidence of the anomalous charge state 57Fe4+ in the nuclear decay of 57Co3+
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The first observation of the elusive Fe4+ charge state coming from the nuclear decay of 57Co3+ has been found in the Mössbauer emission spectra of 57Co:La2Li0.5Co0.5O4. A Ti-doped sample was prepared in order to show that the Fe4+ fraction can be conveniently monitored. Both results were predicted on the basis of the electronic energy-band scheme of these oxides.
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FONTCUBERTA I GRIÑÓ, Josep, FERNÁNDEZ RENNA, Ana Inés and GOODENOUGH, John B. Evidence of the anomalous charge state 57Fe4+ in the nuclear decay of 57Co3+. Physical Review Letters. 1986. Vol. 57, num. 15, pags. 1931-1934. ISSN 0031-9007. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/13178