Ultrafast demagnetization rates in two- component magnetic materials

O. Chubykalo-Fesenko, U. Atxitia, P. Nieves, J. Barker, R. W. Chantrell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recently derived Landau-Lifshitz-Bloch equation of motion for two-component magnetic systems, including ferri- ferro- and antiferromagnets, provides a framework to analyze species dependent ultra fast demagnetization rates. In agreement with reported experimental observations, we show that Gd sublattice demagnetizes slower then FeCo in GdFeCo. However, we predict that at high initial temperatures Gd should be faster than Fe, providing the possibility to control the polarity of the transient antiferromagnetic state. Our results indicate that typically Fe should be slower than Ni in FeNi. The situation is opposite if Fe is 4 times stronger coupled to the electronic system than Ni.

Original languageEnglish
Title of host publicationUltrafast Magnetism I - Proceedings of the International Conference, UMC 2013
EditorsRoy Chantrell, Jean-Yves Bigot, Wolfgang Hübner, Theo Rasing
PublisherSpringer Science and Business Media, LLC
Pages251-254
Number of pages4
ISBN (Electronic)9783319077420
DOIs
Publication statusPublished - 2015 Jan 1
EventInternational Conference on Ultrafast Magnetism, UMC 2013 - Strasbourg, France
Duration: 2013 Oct 282013 Nov 1

Publication series

NameSpringer Proceedings in Physics
Volume159
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941

Other

OtherInternational Conference on Ultrafast Magnetism, UMC 2013
CountryFrance
CityStrasbourg
Period13/10/2813/11/1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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