Quadratic magneto-optical Kerr effect in Co2MnSi

Georg Wolf, Jaroslav Hamrle, Simon Trudel, Takahide Kubota, Yasuo Ando, Burkard Hillebrands

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18 Citations (Scopus)


Quadratic magneto-optical Kerr effects (QMOKE) are investigated in epitaxial Co2 MnSi thin films as a function of the post-deposition annealing temperature. We determine the amplitude of the QMOKE signal for different annealing temperatures, which provide various degrees of L2 1 crystal ordering, as manifested by X-ray diffraction. We observe that QMOKE is significantly present only when the L21 ordering phase is also present, and that the QMOKE signal increases with the higher degree of L21 ordering. Additionally, we notice that the linear magneto-optical Kerr effect (LMOKE) decreases with higher annealing temperature. A comparison of the linear and quadratic MOKE contributions shows the amplitudes are of similar magnitude. From these results, we conclude that the presence of QMOKE is linked to the higher degree of L21 ordering in Co2 MnSi.

Original languageEnglish
Article number043904
JournalJournal of Applied Physics
Issue number4
Publication statusPublished - 2011 Aug 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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