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Apparent magnetic e...
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St Pierre, T. G.
(author)
Apparent magnetic energy-barrier distribution in horse-spleen ferritin : Evidence for multiple interacting magnetic entities per ferrihydrite nanoparticle
- Article/chapterEnglish2002
Publisher, publication year, extent ...
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-21254
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-21254URI
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https://doi.org/10.1103/PhysRevB.65.024436DOI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20100525
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Magnetic viscosity measurements were made on native horse-spleen ferritin in zero applied magnetic field at temperatures between 21 and 21 K. The data have been used to calculate the apparent magnetic-moment-weighted energy barrier distribution for the sample of ferritin. The distribution is composed of a log-normal distribution plus a second distribution that is well described by an exponential decay of barrier frequency with increasing barrier height. The two distributions contribute approximately equally to the overall distribution. The log-normal distribution has its peak at an energy barrier of approximately 3 x 10(-21) J, while the decay constant for the second distribution has a value of approximately 2 x 10(-21) J. The existence of the low-energy barrier distribution with exponentially decaying shape in conjunction with the observation of shifted field-cooled magnetic hysteresis loops is interpreted as strong evidence for the existence of multiple interacting magnetic entities within each ferritin particle.
Subject headings and genre
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macroscopic quantum coherence
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antiferromagnetic ferritin
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particles
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proteins
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spin
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relaxation
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cores
Added entries (persons, corporate bodies, meetings, titles ...)
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Gorham, N. T.
(author)
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Allen, P. D.
(author)
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Costa-Kramer, J. L.
(author)
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Rao, K. V.KTH,Materialvetenskap(Swepub:kth)u1i9ssac
(author)
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KTHMaterialvetenskap
(creator_code:org_t)
Related titles
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In:Physical Review B. Condensed Matter and Materials Physics65:21098-01211550-235X
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