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RESEARCH PRODUCT

Mössbauer Emission Spectroscopy of Mixed-Valency after Nuclear Decay in Iron Complexes

Philipp GütlichM. AlflenC. HennenHartmut Spiering

subject

education.field_of_studyMaterials scienceTransition metalMössbauer effectSpin statesPopulationMössbauer spectroscopyAnalytical chemistryCondensed Matter::Strongly Correlated ElectronsEmission spectrumeducationSpin (physics)Radioactive decay

description

The population of anomalous spin states and aliovalent charge states of iron induced by the 57 Co(EC)57 Fe nuclear decay in polycristalline transition metal compounds was studied by means of Coincidence Mossbauer Emission Spectroscopy (CMES), that is Time-Differential Mossbauer Emission Spectroscopy (TDMES) as well as γ/Xray-Coincidence Mossbauer Emission Spectroscopy (γ/X-CMES). By use of time-integral Mossbauer emission spectroscopy (TIMES) we have observed anomalous high spin (S = 2) states of 57 Fe(II) in the system [57Co/Co(phen)3(ClO 4)2 with increasing intensities on lowering the temperature. With TDMES we followed quantitatively the high spin-low spin relaxation kinetics in this compound.

yearjournalcountryeditionlanguage
1991-01-01
https://doi.org/10.1007/978-94-011-3606-8_17