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arXiv · 1512.01407

Suppression of the ferromagnetic order in the Heusler alloy Ni50Mn35In15 by hydrostatic pressure

C. Salazar Mejia·K. Mydeen·P. Naumov·S. A. Medvedev·C. Wang·M. Hanfland·A. K. Nayak·U. Schwarz·C. Felser·M. Nicklas
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Abstract

We report the effect of hydrostatic pressure on the magnetic and structural properties of the shape-memory Heusler alloy Ni50Mn35In15. Magnetization and x-ray diffraction experiments were performed at hydrostatic pressures up to 5 GPa using diamond anvil cells. Pressure stabilizes the martensitic phase, shifting the martensitic transition to higher temperatures and suppresses the ferromagnetic austenitic phase. Above ~3 GPa, where the martensitic-transition temperature approaches the Curie temperature in the austenite, the magnetization shows no indication of ferromagnetic ordering anymore. We further find an extremely large temperatureregion with a mixture of martensite and austenite phases, which directly relates to the magnetic properties.

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C. Salazar Mejia, K. Mydeen, P. Naumov, S. A. Medvedev, C. Wang, M. Hanfland, A. K. Nayak, U. Schwarz, C. Felser, M. Nicklas. 2015-12-04. Suppression of the ferromagnetic order in the Heusler alloy Ni50Mn35In15 by hydrostatic pressure. https://doi.org/10.1063/1.4954838

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