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Magnetic properties of Mn2NiSn shape memory alloy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2013 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 25, no 23, 236005- p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we present the magnetic properties of the inverse Heusler Mn2NiSn alloy computed by ab initio density functional theory (DFT) calculations in order to understand the large magnetic moments observed in experiments in contrast to smaller values obtained in previous ab initio calculations. Our results show that the magnetization in this system is quite sensitive to volume and atomic ordering in the sublattices. The observed variations in the magnetizations are explained from the features in the electronic structures of the Mn d-bands. We conclude that the symmetry of lattice sites and the alloying with Ni atoms are responsible for a high magnetic moment for a range of volumes. This opens a possible route to realize a large magnetization, a requirement for shape memory properties in magnetic alloys, in similar systems with an inverse Heusler structure.

Place, publisher, year, edition, pages
2013. Vol. 25, no 23, 236005- p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-203525DOI: 10.1088/0953-8984/25/23/236005ISI: 000319673700016OAI: oai:DiVA.org:uu-203525DiVA: diva2:637170
Available from: 2013-07-16 Created: 2013-07-15 Last updated: 2017-12-06Bibliographically approved

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Sanyal, Biplab

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