Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10155736 | Superlattices and Microstructures | 2018 | 14 Pages |
Abstract
The CoFeTiAl1-xSix (xâ¯=â¯3.125%) compound with Heusler structure was studied by theory and experiment. An unexpected diluted magnetism is found with a Curie temperature of 100â¯K. The calculated electronic structures show that the spin-splitting of DOS only occurs in p-like the states achieved by p-d hybridization near Fermi level and leads to the ferromagnetism when the Si content is lower than 6%. The magnetic moment is not localized on any atom but distributed in a region with the doped Si atom as the center. An anomalous hall effect is observed, which confirms the ferromagnetism in Si-doped CoFeTiAl alloy. A magnetoresistance of 0.375% for CoFeTiAl1-xSix is observed at 2â¯K.
Related Topics
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Authors
T.T. Lin, X.F. Dai, X.M. Zhang, H.P. Zhang, G.F. Chen, G.D. Liu,