Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1667867 | Thin Solid Films | 2011 | 4 Pages |
Abstract
We investigated the spin filter effect in tunnel junctions with a Ni1 + xFe2 − xO4 ferrimagnetic tunnel barrier. For higher Tc above room temperature, Ni1 + xFe2 − xO4 film should be thicker than 4.0 nm and grown above 400 °C. The spin filter junctions (SFJs) of Fe3O4(001)/Ni1 + xFe2 − xO4(001)/Al2O3/Fe/Au grown on MgO(001) substrates exhibited an inverse magnetoresistance effect at room temperature, which is consistent with the band calculation of NiFe2O4.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Taro Nagahama, Hitoshi Kubota, Shinji Yuasa,