Article ID Journal Published Year Pages File Type
1800917 Journal of Magnetism and Magnetic Materials 2010 4 Pages PDF
Abstract

The artificial control of grain-boundary resistance and its contribution to magnetic and magneto-transport properties in [Co(3 nm)/Bi(2.5 nm)/Co(3 nm)]Ir20Mn80(12 nm) thin films that exhibit exchange bias is studied. Transverse magnetoresistance (MR) loops exhibit a negative MR in thin films grown by magnetron sputtering on Si/SiNx(100 nm) substrates. This negative MR effect is of the giant-MR (GMR) type, although its magnitude is less than 1%. A considerable exchange bias (EB) effect is observed only at lower temperatures, where both, GMR and isothermal magnetization loops exhibit a shift of −600 Oe at 5 K.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
Authors
, ,