Reduction of the substitutional disorder by heat treatments in Mn2-xCoxVAl Heusler alloys
Radu GAVREA, Marin COLDEA, Lucian BARBU-TUDORAN, Olivier ISNARD, Viorel POP. Diana BENEAdownload PDF
Abstract. We report on the preparation and the atomic disorder reduction by annealing in Mn2-xCoxVAl Heusler alloys. The degrees of the B2 and L21 atomic ordering for the as-cast samples, obtained from intensity ratios of (200) and (111) peaks respectively related to (220) peak of the X-ray patterns, are significantly improved after annealing at 700 – 800 °C for 72 h. The diminution of the substitutional disorder is essential in these types of compounds, as the half-metallic character and the magnetic properties are primarily influenced by this factor.
Heusler compounds, Substitutional disorder, X-ray diffraction, Neutron diffraction
Published online 11/5/2018, 9 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Radu GAVREA, Marin COLDEA, Lucian BARBU-TUDORAN, Olivier ISNARD, Viorel POP. Diana BENEA, ‘Reduction of the substitutional disorder by heat treatments in Mn2-xCoxVAl Heusler alloys’, Materials Research Proceedings, Vol. 8, pp 219-227, 2018
The article was published as article 25 of the book Powder Metallurgy and Advanced Materials
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