Co-occurrence of superparamagnetism and anomalous hall effect in highly reduced cobalt-doped rutile TiO2-δ films
Publication Type
Journal Article
Authors
Shinde, S.R, S.B Ogale, J.S Higgins, H Zheng, A.J Millis, V.N Kulkarni, Ramamoorthy Ramesh, R.L Greene, T Venkatesan
DOI
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.
Journal
Physical Review Letters
Volume
92
Year of Publication
2004
ISSN
00319007
Notes
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