Magnetic properties of Co-doped TiO(2) anatase nanopowders

Pereira, L. C. J.; Nunes, M. R.; Monteiro, O. C.; Silvestre, António Jorge

http://hdl.handle.net/10400.21/1764

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Authors

Pereira, L. C. J.

Nunes, M. R.

Monteiro, O. C.

Silvestre, António Jorge

Abstract(s)

This letter reports on the magnetic properties of Ti(1-x)Co(x)O(2) anatase phase nanopowders with different Co contents. It is shown that oxygen vacancies play an important role in promoting long-range ferromagnetic order in the material studied in addition to the transition-metal doping. Furthermore, the results allow ruling out the premise of a strict connection between Co clustering and the ferromagnetism observed in the Co:TiO(2) anatase system.

Keywords

Cobalt Ferromagnetic Materials Long-Range Order Magnetic Semiconductors Nanoparticles Semiconductor Doping Titanium Compounds Vacancies (Crystal) Thin-Films Ferromagnetism Oxides Field

URI

http://hdl.handle.net/10400.21/1764

Citation

Pereira L C J, Nunes M R, Monteiro O C, Silvestre A J. Magnetic properties of Co-doped TiO(2) anatase nanopowders. Applied Physics Letters. ISSN: 0003-6951. 2008: 93 (22).