Crystal and magnetic structure of antiferromagnetic Mn2PtPd

Kumar V, Reehuis M, Hoser A, Adler P, Felser C (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Journal of Physics: Condensed Matter Institute of Physics: Hybrid Open Access

Book Volume: 30

Article Number: 265803

Journal Issue: 26

DOI: 10.1088/1361-648X/aac6fb

Abstract

We have investigated the crystal and magnetic structure of Mn2PtPd alloy using powder x-ray and neutron diffraction experiments. This compound is believed to belong to the Heusler family having crystal symmetry I4/mmm (TiAl3-type). However, in this work we found that the Pd and Pt atoms are disordered and thus Mn2PtPd crystallizes in the L10 structure having P4/mmm symmetry (CuAu-I type) like MnPt and MnPd binary alloys. The lattice constants are a = 2.86 Å and c = 3.62 Å at room temperature. Mn2PtPd has a collinear antiferromagnetic spin structure below the Néel temperature TN = 866 K, where Mn moments of ∼4 B lie in the ab-plane. We observed a strong change in the lattice parameters near TN. The sample exhibits metallic behaviour, where electrical resistivity and carrier concentration are of the order of 10-5 cm and 1021 cm-3, respectively.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE)

How to cite

APA:

Kumar, V., Reehuis, M., Hoser, A., Adler, P., & Felser, C. (2018). Crystal and magnetic structure of antiferromagnetic Mn2PtPd. Journal of Physics: Condensed Matter, 30(26). https://doi.org/10.1088/1361-648X/aac6fb

MLA:

Kumar, Vivek, et al. "Crystal and magnetic structure of antiferromagnetic Mn2PtPd." Journal of Physics: Condensed Matter 30.26 (2018).

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