@article{33669, keywords = {transmission electron microscopy, nanoparticles, Titanium dioxide, Ferromagnetism, magnetic anisotropy, Magnetization, Doping (additives), Interfaces (materials), Coercive force, Cobalt, electron diffraction, Hysteresis loops, Hall effect, Magnetometers, SQUIDs, Diluted magnetic semiconductors (DMS), Remanence, Magnetic semiconductors, Rutherford backscattering spectroscopy, Anomalous Hall effects (AHE), Superparamagnetism}, author = {S.R Shinde and S.B Ogale and J.S Higgins and H Zheng and A.J Millis and V.N Kulkarni and Ramamoorthy Ramesh and R.L Greene and T Venkatesan}, title = {Co-occurrence of superparamagnetism and anomalous hall effect in highly reduced cobalt-doped rutile TiO2-δ films}, abstract = {Superparamagnetizm in highly reduced cobalt (Co)-doped rutile TiO 2-δfilms displaying an anomalous Hall effect (AHE) was investigated. The presence of nanosized superparamagnetic cobalt clusters of ∼8-10 nm size in the films at the interface was established using the magnetization and transmission electron microscopy. In a single-domain particle the easy directions of magnetization were separated by the anisotropy barrier. The results indicate the co-occurrence of superparamagnetizm and AHE.}, year = {2004}, journal = {Physical Review Letters}, volume = {92}, number = {16}, pages = {166601-1-166601-4}, publisher = {American Physical Society}, issn = {00319007}, doi = {10.1103/PhysRevLett.92.166601}, note = {cited By 328}, language = {eng}, }