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arXiv · 2201.05283

Antisite disorder and phase segregation in Mn$_{2}$NiSn

S. V. Malik·E. T. Dias·A. K. Nigam·K. R. Priolkar
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Abstract

A systematic study of crystal structure, local structure, magnetic and transport properties in quenched and temper annealed Ni$_{2-x}$Mn$_{1+x}$Sn alloys indicate the formation of Mn$_3$Sn type structural defects caused by an antisite disorder between Mn and Sn occupying the Y and Z sublattices of X$_2$YZ Heusler structure. The antisite disorder is caused by the substitution of Ni by Mn at the X sites. On temper annealing, these defects segregate and phase separate into $L2_1$ Heusler and $D0_{19}$ Mn$_3$Sn type phases.

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S. V. Malik, E. T. Dias, A. K. Nigam, K. R. Priolkar. 2022-01-14. Antisite disorder and phase segregation in Mn$_{2}$NiSn. https://doi.org/10.1088/1361-6463/ac4b59

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