FePtAuFePt nanopillars with current-perpendicular-to-plane geometries were fabricated, and current induced magnetization switching was demonstrated. Resistance measured with sweeping current showed the resistance change due to the change of the magnetization alignment of the two FePt layers, which was interpreted as the magnetization switching by spin-polarized current. The critical current density for the magnetization switching of the FePt layer with a uniaxial magnetic anisotropy of 2× 106 ergs cm3 was of the order of 108 A cm2.
ASJC Scopus subject areas
- Physics and Astronomy(all)