Ru$_{2-x}$Mn$_{1+x}$Al thin films

K. E. Siewierska; H. Kurt; B. Shortall; A. Jha; N. Teichert; G. Atcheson; M. Venkatesan; J. M. D. Coey; Z. Gercsi; K. Rode

Ru$_{2-x}$Mn$_{1+x}$Al thin films

Materials Science 2023-01-31 v2

Authors: K. E. Siewierska , H. Kurt , B. Shortall , A. Jha , N. Teichert , G. Atcheson , M. Venkatesan , J. M. D. Coey , Z. Gercsi , K. Rode

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Abstract

The cubic Heusler alloy Ru $_{2-x}$ Mn $_{1+x}$ Al is grown in thin film form on MgO and MgAl $_2$ O $_4$ substrates. It is a highly spin-polarised ferrimagnetic metal, with weak magnetocrystalline anisotropy. Although structurally and chemically similar to $\text{Mn}_2\text{Ru}_x\text{Ga}$ , it does not exhibit ferrimagnetic compensation, or large magneto galvanic effects. The differences are attributed to a combination of atomic order and the hybridisation with the group 13 element Al or Ga. The spin polarisation is around 50 to 60 %. There is a gap in the density of states just above the Fermi level in fully ordered compounds.

Keywords

thin film magnetism alloy microstructure magnetocaloric effect

Cite

@article{arxiv.2301.10148,
  title  = {Ru$_{2-x}$Mn$_{1+x}$Al thin films},
  author = {K. E. Siewierska and H. Kurt and B. Shortall and A. Jha and N. Teichert and G. Atcheson and M. Venkatesan and J. M. D. Coey and Z. Gercsi and K. Rode},
  journal= {arXiv preprint arXiv:2301.10148},
  year   = {2023}
}

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8 pages , 7 figures, 2 tables

Ru$_{2-x}$Mn$_{1+x}$Al thin films

Abstract

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