Localisation of Mn 3d states in semi-Heusler compounds

CoV sub 1-x Mn sub x Sb and NiTi sub 1-x Mn sub x Sb solid solutions are studied. For x(Mn) < 0.3, Mn states are localised below E sub F , the resistivity is metallic, magnetic interactions are weak. Near x = 0.35, a semiconducting behaviour appears in both series and ferromagnetic interactions s...

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Published in:Physica. B, Condensed matter Condensed matter, 1998-07, Vol.259-261, p.841-842
Main Authors: Pierre, J, Kaczmarska, K, Tobola, J, Skolozdra, R V, Melnik, G A
Format: Article
Language:English
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Summary:CoV sub 1-x Mn sub x Sb and NiTi sub 1-x Mn sub x Sb solid solutions are studied. For x(Mn) < 0.3, Mn states are localised below E sub F , the resistivity is metallic, magnetic interactions are weak. Near x = 0.35, a semiconducting behaviour appears in both series and ferromagnetic interactions strongly increase. For x > 0.5, a metallic regime is recovered. This is attributed to Anderson localisation of 3d states due to atomic and magnetic disorders.
ISSN:0921-4526