Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film

Kurdi S, Sakuraba Y, Masuda K, Tajiri H, Nair B, Nataf GF, Vickers ME, Reiss G, Meinert M, Dhesi SS, Ghidini M, et al. (2022)
Journal of Physics D: Applied Physics 55(18): 185305.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Kurdi, Samer; Sakuraba, Yuya; Masuda, Keisuke; Tajiri, Hiroo; Nair, Bhaskaran; Nataf, Guillaume F.; Vickers, Mary E.; Reiss, GünterUniBi ; Meinert, Markus; Dhesi, Sarnjeet S.; Ghidini, Massimo; Barber, Zoe H.
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Abstract / Bemerkung
In this work, we investigate the effect of anti-site disorder on the half-metallic properties of a Mn2FeAl Heusler alloy thin film. The film was grown on TiN-buffered MgO 001 substrates via magnetron sputtering. A detailed structural characterization using x-ray diffraction (XRD) and anomalous XRD showed that the film crystallizes in the partially disordered L2(1) B structure with 33% disorder between the Mn(B) and Al(D) sites. We measure a positive anisotropic magnetoresistance in the film, which is an indication of non-half metallic behaviour. Our x-ray magnetic circular dichroism sum rules analysis shows that Mn carries the magnetic moment in the film, with a positive Fe moment. Experimentally determined moments correspond most closely with those found by density functional calculated for the L2(1) B structure with Mn(B) and Al(D) site disorder, matching the experimental structural analysis. We thus attribute the deviation from half-metallic behaviour to the formation of the L2(1) B structure. To realize a half-metallic Mn2FeAl film it is important that the inverse Heusler XA structure is stabilized with minimal anti-site atomic disorder.
Stichworte
Heusler alloy; spintronics; x-ray absorption spectroscopy; x-ray; diffraction; x-ray magnetic circular dichroism; spin polarization; thin; films
Erscheinungsjahr
2022
Zeitschriftentitel
Journal of Physics D: Applied Physics
Band
55
Ausgabe
18
Art.-Nr.
185305
ISSN
0022-3727
eISSN
1361-6463
Page URI
https://pub.uni-bielefeld.de/record/2961642

Zitieren

Kurdi S, Sakuraba Y, Masuda K, et al. Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film. Journal of Physics D: Applied Physics . 2022;55(18): 185305.
Kurdi, S., Sakuraba, Y., Masuda, K., Tajiri, H., Nair, B., Nataf, G. F., Vickers, M. E., et al. (2022). Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film. Journal of Physics D: Applied Physics , 55(18), 185305. https://doi.org/10.1088/1361-6463/ac4e32
Kurdi, S., Sakuraba, Y., Masuda, K., Tajiri, H., Nair, B., Nataf, G. F., Vickers, M. E., Reiss, G., Meinert, M., Dhesi, S. S., et al. (2022). Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film. Journal of Physics D: Applied Physics 55:185305.
Kurdi, S., et al., 2022. Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film. Journal of Physics D: Applied Physics , 55(18): 185305.
S. Kurdi, et al., “Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film”, Journal of Physics D: Applied Physics , vol. 55, 2022, : 185305.
Kurdi, S., Sakuraba, Y., Masuda, K., Tajiri, H., Nair, B., Nataf, G.F., Vickers, M.E., Reiss, G., Meinert, M., Dhesi, S.S., Ghidini, M., Barber, Z.H.: Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film. Journal of Physics D: Applied Physics . 55, : 185305 (2022).
Kurdi, Samer, Sakuraba, Yuya, Masuda, Keisuke, Tajiri, Hiroo, Nair, Bhaskaran, Nataf, Guillaume F., Vickers, Mary E., Reiss, Günter, Meinert, Markus, Dhesi, Sarnjeet S., Ghidini, Massimo, and Barber, Zoe H. “Quantitative atomic order characterization of a Mn2FeAl Heusler epitaxial thin film”. Journal of Physics D: Applied Physics 55.18 (2022): 185305.
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2022-04-14T16:44:50Z
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