Structural, Electronic And Magnetic Properties Of The Heusler Alloy Mn 2 VIn: A Combined DFT And Experimental Study
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Date
2018Author
Muthui, Zipporah W.
Musembi, Robinson J.
Mwabora, Julius M.
Skomski, Ralph
Arti, Kashyap
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
Structural, electronic and magnetic properties of the Heusler alloy Mn
2
VIn have been investigated using the density functional
theory and experimental techniques. Unlike many other Heusler compounds, Mn
2
VIn is not predicted to be half-metallic at the
optimized lattice constant, but is highly spin polarized at a slightly lo
wer lattice constant. It however exhibits ferrimagnetic coupling
between the Mn and V sublattices, as expected of Mn-based Heuslers. We have, then, synthesized the compound by arc melting and
studied magnetic properties that are of interest fundamentally and for technological applications. The structural properties were
determined using X-ray diffraction, revealing the presence of cubic and tetragonal phases in the sample. The chemical composition
was determined using energy-dispersive X-ray spectroscopy together with the scanning electron microscope, and the magnetic
properties were investigated by superconducting quantum interference device magnetometry. The alloy exhibits superparamagnetic
spin blocking with a blocking temperature
T
B
of 40 K.
Citation
Muthui, Zipporah W., et al. "Structural, Electronic and Magnetic Properties of the Heusler Alloy Mn 2 VIn: A Combined DFT and Experimental Study." IEEE Transactions on Magnetics 54.1 (2018): 1-5.Publisher
University of Nairobi
Subject
Density functional theory (DFT), electronic structure, Heusler compounds, superparamagnetism.Rights
Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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