Ferrimagnetism in epitaxially grown Mn2VAl Heusler alloy investigated by means of soft x-ray magnetic circular dichroism

Kubota, Takahide; Kodama, Kenji; Nakamura, Tetsuya; Sakuraba, Yuya; Oogane, Mikihiko; Takanashi, Koki; Ando, Yasuo
November 2009
Applied Physics Letters;11/30/2009, Vol. 95 Issue 22, p222503
Academic Journal
Epitaxially grown Mn2VAl films were fabricated on MgO (001) single crystalline substrates by using a sputtering technique. The resulting Mn2VAl films with substrate temperatures of Ts=500 and 600 °C showed an L21-ordered structure. The saturation magnetization was 150 emu/cm3 at 300 K for a sample with Ts=600 °C. Ferrimagnetic coupling between the Mn and V magnetic moments in the L21-Mn2VAl film was clearly demonstrated by soft x-ray magnetic circular dichroism. In previous studies, this coupling was found only in polycrystalline bulk samples examined by nuclear magnetic resonance.


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