Transport Investigation of Anomalous Magnetic Signatures in a Mn-Ni-Si Ternary Compound

POSTER

Abstract

Compounds in the Manganese – Nickel – Silicon system have been reported to have interesting magnetism, including reported antiferromagnetism [1] and ferrimagnetism [2]. We synthesize single crystal samples by Czochralski pulling in an arc furnace under an argon atmosphere. Magnetic susceptibility is measured to characterize magnetism. We measure electric transport as a function of temperature and field and discover anomalous features related to its magnetism. We use thermal conductivity to probe these anomalies and disentangle the effects of charge and heat carriers.



1. Kolenda, M., et al., Magnetic structure of Mn3Ni2Si. Journal of Magnetism and

Magnetic Materials, 1990. 89(1): p. 26-28.

2. Fang, Q. et, Magnetic properties and possible martensitic transformation in Mn2NiSi and Ni2MnSi Heusler alloys, Journal of Magnetism and Magnetic Materials, 2014. 362: p. 42-46.

*This research was supported by the Air Force Office of Scientific Research (AFOSR) Multidisciplinary University Research Initiative (MURI) grant on TOPological Flat bands fOr Correlated Electron systems (TOPFORCE) under the award number FA9550-22-1-0270.

Presenters

  • Corina Dunn

    • University of California, Berkeley

Authors

  • Corina Dunn

    • University of California, Berkeley

  • Darian Hall

    • University of California, Berkeley

  • James G Analytis

    • University of California, Berkeley
    • UC Berkeley