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X-ray induced demagnetization of single-molecule magnets
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2014 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 105, no 3, 032411- p.Article in journal (Refereed) Published
Abstract [en]

Low-temperature x-ray magnetic circular dichroism measurements on the endohedral single-molecule magnet DySc2N@C-80 at the Dy M-4,M-5 edges reveal a shrinking of the opening of the observed hysteresis with increasing x-ray flux. Time-dependent measurements show that the exposure of the molecules to x-rays resonant with the Dy M-5 edge accelerates the relaxation of magnetization more than off-resonant x-rays. The results cannot be explained by a homogeneous temperature rise due to x-ray absorption. Moreover, the observed large demagnetization cross sections indicate that the resonant absorption of one x-ray photon induces the demagnetization of many molecules.

Place, publisher, year, edition, pages
2014. Vol. 105, no 3, 032411- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-233111DOI: 10.1063/1.4891485ISI: 000341152300054OAI: oai:DiVA.org:uu-233111DiVA: diva2:751658
Available from: 2014-10-01 Created: 2014-09-29 Last updated: 2017-12-05Bibliographically approved

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Westerström, Rasmus

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