Magnetostructural transformations in Ni51Mn36Sn13 Heusler alloy thin films

Karol Załęski 1 , Janusz Dubowik 1 , Iwona Gościańska 2 , Bartłomiej Andrzejewski 1 , and Tomasz Toliński 1
  • 1 Institute of Molecular Physics, Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179, Poznań, Poland
  • 2 Department of Physics, A. Mickiewicz University, Umultowska 85, 61-818, Poznań, Poland

Abstract

In this paper we report structural, magnetic and transport properties of strongly textured Ni51Mn36Sn13 thin films. The off-stoichiometric Heusler alloy films with 200 nm thickness were sputter-deposited on a MgO(100) substrate at 500 K and after annealed at 1000 K in UHV conditions. The textured growth was confirmed by x-ray diffraction in Bragg-Brentano geometry. The temperature dependence of the magnetic properties was measured by VSM and FMR methods. The electron transport measurements were carried out in function of temperature in 0 Oe and 50 kOe fields. All measurements corroborate the existence of the martensitic transformation in the film. Furthermore, transport measurements reveal an influence of the magnetic field on the transition temperature.

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