Extrinsic magnetotransport phenomena in ferromagnetic oxides

Abstract

Magnetic oxides show a variety of extrinsic magnetotransport phenomena: grain-boundary-, tunnelling-and domain-wall magnetoresistance. In view of these phenomena the role of some magnetic oxides is outstanding: these are believed to be half-metallic having only one spin-subband at the Fermi level. These fully spinpolarized oxides have great potential for applications in spin-electronic devices and have, accordingly, attracted an intense research activity in recent years.