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Origin of the anomalous temperature dependence of coercivity in soft ferromagnets
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2014 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 116, no 5, 053906- p.Article in journal (Refereed) Published
Abstract [en]

We report on the origin of the anomalous temperature dependence of coercivity observed in some soft ferromagnets by studying the magnetic and electronic properties of FeZr films doped using ion implantation by H, He, B, C, and N. The anomalous increase of the coercivity with temperature was observed only in the C- and B-doped samples. Using x-ray photoelectron spectroscopy, we show that the anomalous behavior of the coercivity coincides with the occurrence of an electron charge transfer for those implanted samples. The origin of the anomaly is discussed in terms of (i) magnetic softness, (ii) nature of the Fe-C and -B covalent bonds, and (iii) large charge transfer.

Place, publisher, year, edition, pages
2014. Vol. 116, no 5, 053906- p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-153270DOI: 10.1063/1.4892038ISI: 000341178900042Scopus ID: 2-s2.0-84905978804OAI: oai:DiVA.org:kth-153270DiVA: diva2:753819
Note

QC 20141009

Available from: 2014-10-09 Created: 2014-10-03 Last updated: 2017-12-05Bibliographically approved

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Hallen, Anders

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