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Multilevel model for magnetic deflagration in nanomagnet crystals
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Princeton University, USA.
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Number of Authors: 5
2017 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 95, no 17, 174403Article in journal (Refereed) Published
Abstract [en]

We extend the existing theoretical model for determining the characteristic features of magnetic deflagration in nanomagnet crystals. For the first time, all energy levels are accounted for calculation of the the Zeeman energy, the deflagration velocity, and other parameters. It reduces the final temperature and significantly changes the propagation velocity of the spin-flipping front. We also consider the effect of a strong transverse magnetic field, and show that the latter significantly modifies the spin-state structure, leading to an uncertainty concerning the activation energy of the spin flipping. Our front velocity prediction for a crystal of Mn-12 acetate in a longitudinal magnetic field is in much better agreement with experimental data than the previous reduced-model results.

Place, publisher, year, edition, pages
2017. Vol. 95, no 17, 174403
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-143456DOI: 10.1103/PhysRevB.95.174403ISI: 000400659900001OAI: oai:DiVA.org:su-143456DiVA: diva2:1106237
Available from: 2017-06-07 Created: 2017-06-07 Last updated: 2017-06-07Bibliographically approved

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Modestov, Mikhail
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