Oxide-based dilute ferromagnetic semiconductors

ZnMnO and Co:TiO 2

A. K. Pradhan, D. Hunter, B. Lasley-Hunter, J. B. Dadson, Kai Zhang, R. R. Rakhimov, Jun Zhang, David J Sellmyer

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We report on ferromagnetic properties of ZnMnO and Co:Ti O2 films grown by pulsed laser deposition with varying growth conditions. We have demonstrated that ZnMnO films show ferromagnetic properties at room temperature. However, oxygen plays a dominant role in the occurrence of ferromagnetism. Introducing carriers into ZnMnO films did not improve the ferromagnetic properties. Our experimental results indicate that the mechanism for ferromagnetism lies, probably, within the perspective of charge transfer between Mn ions through oxygen. On the other hand, our experimental results suggest that the ferromagnetism in Co:Ti O2 films is controlled by the presence of small metal Co2+ clusters in the rutile Ti O2 matrix, which are mainly present at the interface and on the surface of the films.

Original languageEnglish (US)
Article number08M108
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
StatePublished - May 25 2006

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ferromagnetism
oxides
ferromagnetic films
metal clusters
oxygen ions
rutile
pulsed laser deposition
charge transfer
occurrences
room temperature
oxygen
matrices

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Pradhan, A. K., Hunter, D., Lasley-Hunter, B., Dadson, J. B., Zhang, K., Rakhimov, R. R., ... Sellmyer, D. J. (2006). Oxide-based dilute ferromagnetic semiconductors: ZnMnO and Co:TiO 2. Journal of Applied Physics, 99(8), [08M108]. https://doi.org/10.1063/1.2165919

Oxide-based dilute ferromagnetic semiconductors : ZnMnO and Co:TiO 2. / Pradhan, A. K.; Hunter, D.; Lasley-Hunter, B.; Dadson, J. B.; Zhang, Kai; Rakhimov, R. R.; Zhang, Jun; Sellmyer, David J.

In: Journal of Applied Physics, Vol. 99, No. 8, 08M108, 25.05.2006.

Research output: Contribution to journalArticle

Pradhan, AK, Hunter, D, Lasley-Hunter, B, Dadson, JB, Zhang, K, Rakhimov, RR, Zhang, J & Sellmyer, DJ 2006, 'Oxide-based dilute ferromagnetic semiconductors: ZnMnO and Co:TiO 2', Journal of Applied Physics, vol. 99, no. 8, 08M108. https://doi.org/10.1063/1.2165919
Pradhan AK, Hunter D, Lasley-Hunter B, Dadson JB, Zhang K, Rakhimov RR et al. Oxide-based dilute ferromagnetic semiconductors: ZnMnO and Co:TiO 2. Journal of Applied Physics. 2006 May 25;99(8). 08M108. https://doi.org/10.1063/1.2165919
Pradhan, A. K. ; Hunter, D. ; Lasley-Hunter, B. ; Dadson, J. B. ; Zhang, Kai ; Rakhimov, R. R. ; Zhang, Jun ; Sellmyer, David J. / Oxide-based dilute ferromagnetic semiconductors : ZnMnO and Co:TiO 2. In: Journal of Applied Physics. 2006 ; Vol. 99, No. 8.
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