Spin polarization in Cu2MnSn Heusler alloy produced by melt-spinning

We report on magnetism, transport and spin polarization characteristics of the melt-spun Cu2MnSn alloy prepared by the rapid quenching technique. The as- cast ribbons showed a relatively well ordered chemical composition (Cu = 50.4%, Mn = 27.1%, Sn = 22.5%). The structural characterization by using...

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Bibliographic Details
Published inIntermetallics Vol. 85; pp. 139 - 143
Main Authors Obaida, M., Galdun, L., Ryba, T., Komanicky, V., Saksl, K., Durisin, M., Kovac, J., Haskova, V., Szabo, P., Vargova, Z., Varga, R.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2017
Subjects
Heusler alloys
Rapid quenching
Spin polarization
Heusler alloys
Spin polarization
Rapid quenching
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Summary:We report on magnetism, transport and spin polarization characteristics of the melt-spun Cu2MnSn alloy prepared by the rapid quenching technique. The as- cast ribbons showed a relatively well ordered chemical composition (Cu = 50.4%, Mn = 27.1%, Sn = 22.5%). The structural characterization by using X-ray diffraction shows L21/B2 crystalline structure with the lattice parameter a = 6.196 Å. The magnetic and transport measurements show a metallic behavior with the Curie temperature of 530 K and reveal anisotropic character with the easy magnetization plane parallel with respect to the ribbon plane. As-cast Cu2MnSn ribbons show the spin polarization measured by using Andreev reflection technique within the range 68–75%. •Single phase Cu2MnSn Heusler alloy with well-defined anisotropy was produced in a single production step.•It exhibit high Curie temperature and well defined anisotropy with the easy plane parallel with the ribbon plane.•The spin polarization reaches values up to 75% due to strong asymmetry in the minority and majority density of state.
ISSN:0966-9795
1879-0216
DOI:10.1016/j.intermet.2017.02.014