2018 CAP Congress / Congrès de l'ACP 2018

POS-34 Synthesis of inverse tetragonal Heusler alloys

12 Jun 2018, 18:00

1h 30m

SUB McInnes Hall (Dalhousie University)

Poster (Graduate Student) / Affiche (Étudiant(e) du 2e ou 3e cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session & Finals: Poster Competition and Mingle Session with Industry Partners (28) / Employers | Session d'affiches DPMCM et finales: Concours d'affiches et rencontres avec partenaires industriels et employeurs (28)

Speakers

Mr David Kalliecharan (Dalhousie University)Mr Jason McCoombs (Dalhousie University)

Description

The broken inversion symmetry in non-centrosymmetric magnetics produces a chiral interaction responsible for the formation of stable nanoscale magnetic solitons in these materials, known as skyrmions. The inverse tetragonal Heusler alloys possess a D2d point group symmetry that gives rise to antiskyrmions, recently discovered in Mn1.4PtSn [1]. We are investigating the related family of compounds, Mn2-δZGe (where Z is a group 9 or 10 transition element), which are well lattice matched to Si(001). We present preliminary results of the combinatorial synthesis of Mn2-δZGe films prepared by magnetron sputtering and rapid thermal annealing. The stability of the tetragonal phase is explored with X-ray diffraction, X-ray photoelectron spectroscopy and wavelength dispersive spectroscopy.

[1] A. K. Nayak et al. Nature (2017).