Author/Authors :
Shengqiang Zhou، نويسنده , , Markus Berndt، نويسنده , , Danilo Bürger، نويسنده , , Viton Heera، نويسنده , , Kay Potzger، نويسنده , , Gintautas Abrasonis، نويسنده , , Gy?rgy Radn?czi، نويسنده , , Gy?rgy J. Kov?cs، نويسنده , , Andreas Kolitsch، نويسنده , , Manfred Helm، نويسنده , , Jürgen Fassbender، نويسنده , , Wolfhard M?ller، نويسنده , , Heidemarie Schmidt، نويسنده ,
Abstract :
The magneto-transport properties of nanocomposite C:Co (15 and 40 at.% Co) thin films are investigated. The films were grown by ion beam co-sputtering on thermally oxidized silicon substrates in the temperature range from 200 to 500 °C. Two major effects are reported: (i) a large anomalous Hall effect amounting to 2 μΩ cm, and (ii) a negative magnetoresistance. Both the field-dependent resistivity and Hall resistivity curves coincide with the rescaled magnetization curves, a finding that is consistent with spin-dependent transport. These findings suggest that C:Co nanocomposites are promising candidates for carbon-based Hall sensors and spintronic devices.
Keywords :
TEM , Carbon:cobalt nanocomposite , Magneto-transport , Magnetic nanoparticles , Anomalous Hall effect
