Variation of superparamagnetic properties with iron loading in mammalian ferritin

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Hyperfine Interactions, ISSN: 0304-3843, Vol: 66, Issue: 1-4, Page: 71-82

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Richard B. Frankel; Georgia C. Papaefthymiou; Gerald D. Watt
Springer Nature
Physics and Astronomy; Materials Science; Physics
article description
The average blocking temperatures of ferritin molecules containing differing amounts of iron were determined by Mossbauer spectroscopy. The results imply that the magnetic anisotropy of the ferritin core particles is a function of particle volume. By addition ofFe to ferritin core particles it was determined that, at a given temperature within the superpara-magnetic temperature region, the "last-in" ferric ions have average relaxation times that are shorter than those of the bulk ferric ions. © 1991 J.C. Baltzer A.G. Scientific Publishing Company.