TY - GEN
T1 - Ultrafast demagnetization rates in two- component magnetic materials
AU - Chubykalo-Fesenko, O.
AU - Atxitia, U.
AU - Nieves, P.
AU - Barker, J.
AU - Chantrell, R. W.
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2015.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
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U2 - 10.1007/978-3-319-07743-7_78
DO - 10.1007/978-3-319-07743-7_78
M3 - Conference contribution
AN - SCOPUS:84910675511
T3 - Springer Proceedings in Physics
SP - 251
EP - 254
BT - Ultrafast Magnetism I - Proceedings of the International Conference, UMC 2013
A2 - Chantrell, Roy
A2 - Bigot, Jean-Yves
A2 - Hübner, Wolfgang
A2 - Rasing, Theo
PB - Springer Science and Business Media, LLC
T2 - International Conference on Ultrafast Magnetism, UMC 2013
Y2 - 28 October 2013 through 1 November 2013
ER -