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

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.