Magnetic and magneto-transport studies of substrate effect on the martensitic transformation in a NiMnIn shape memory alloy

Andrei Sokolov; Eugene Kirianov; Albina Zlenko; Abdiel Quetz; Anil Aryal; Sudip Pandey; Igor Dubenko; Shane Stadler; Naushad Ali; Nabil Al-Aqtash; Renat Sabirianov

doi:10.1063/1.4943537

AIP Advances (May 2016)

Magnetic and magneto-transport studies of substrate effect on the martensitic transformation in a NiMnIn shape memory alloy

Andrei Sokolov,
Eugene Kirianov,
Albina Zlenko,
Abdiel Quetz,
Anil Aryal,
Sudip Pandey,
Igor Dubenko,
Shane Stadler,
Naushad Ali,
Nabil Al-Aqtash,
Renat Sabirianov

Affiliations

Andrei Sokolov: Department of Physics and Astronomy, University of Nebraska at Lincoln, Lincoln, NE 68588, USA
Eugene Kirianov: Lincoln South West High School, Lincoln, NE 68512, USA
Albina Zlenko: Lincoln South West High School, Lincoln, NE 68512, USA
Abdiel Quetz: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
Anil Aryal: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
Sudip Pandey: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
Igor Dubenko: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
Shane Stadler: Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
Naushad Ali: Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
Nabil Al-Aqtash: Department of Physics, University of Nebraska at Omaha, Omaha, NE 68182, USA
Renat Sabirianov: Department of Physics, University of Nebraska at Omaha, Omaha, NE 68182, USA

DOI: https://doi.org/10.1063/1.4943537
Journal volume & issue: Vol. 6, no. 5
pp. 056211 – 056211-5

Abstract

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The effect of substrates on the magnetic and transport properties of Ni2Mn1.5In0.5 ultra-thin films were studied theoretically and experimentally. High quality 8-nm films were grown by laser-assisted molecular beam epitaxy deposition. Magneto-transport measurements revealed that the films undergo electronic structure transformation similar to those of bulk materials at the martensitic transformation. The temperature of the transformation depends strongly on lattice parameters of the substrate. To explain this behavior, we performed DFT calculations on the system and found that different substrates change the relative stability of the ferromagnetic (FM) austenite and ferrimagnetic (FiM) martensite states. We conclude that the energy difference between the FM austenite and FiM martensite states in Ni2Mn1.5In0.5 films grown on MgO (001) substrates is ΔE = 0.20 eV per NiMnIn f.u, somewhat lower compared to ΔE = 0.24 eV in the bulk material with the same lattice parameters. When the lattice parameters of Ni2Mn1.5In0.5 film have values close to those of the MgO substrate, the energy difference becomes ΔE = 0.08 eV per NiMnIn f.u. These results suggest the possibility to control the martensitic transition in thin films through substrate engineering.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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