Substitution effect on the magnetic transitions of Fe2MnSi

The Heusler compound Fe2MnSi exhibits a ferromagnetic transition at TC ∼ 220 K, and, below, another magnetic transition at TR ∼ 65 K, which is supposed to be a ferrimagnetic transition. In this study we investigate the effects of the substitution of Co and V for Fe and Mn, respectively, on these tra...

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Bibliographic Details
Main Authors: Hiroi, Masahiko, Yano, Iori, Sezaki, Kenta, Shigeta, Iduru, Ito, Masakazu, Manaka, Hirotaka, Terada, Norio
Format: Conference Proceeding
Language:English
Subjects:
Critical field (superconductivity)
Ferromagnetism
Magnetic transitions
Manganese
Physics
Substitutes
Temperature dependence
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Summary:The Heusler compound Fe2MnSi exhibits a ferromagnetic transition at TC ∼ 220 K, and, below, another magnetic transition at TR ∼ 65 K, which is supposed to be a ferrimagnetic transition. In this study we investigate the effects of the substitution of Co and V for Fe and Mn, respectively, on these transitions. The temperature dependence of magnetization M(T) is measured for (Fe1−yCoy)2MnSi (y < 0.1) and Fe2Mn1−xVxSi (x < 0.2). Substitution for both the cases leads to the fairy rapid decrease and the disappearance of TR. However, for Co-substitution TC increases rapidly but for V-substitution TC increases only slowly. The electrical resistivity ρ(T) of Fe2Mn0.8V0.2Si is measured in magnetic field up to 9 T. From this it is found that TR is 6 K at 0 T and is absent at 7 T. The critical field of the transition for TR is estimated to be ∼ 7 T.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/400/3/032021