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|Title:||Hydrothermal epitaxy of ferromagnetic cobalt doped titanium dioxide films at 120°C||Authors:||Liang Goh, G.K.
Seng Chan, K.Y.
|Issue Date:||21-Jan-2011||Citation:||Liang Goh, G.K., Seng Chan, K.Y., Liu, T. (2011-01-21). Hydrothermal epitaxy of ferromagnetic cobalt doped titanium dioxide films at 120°C. CrystEngComm 13 (2) : 524-529. ScholarBank@NUS Repository. https://doi.org/10.1039/c0ce00112k||Abstract:||Epitaxial cobalt doped TiO2 anatase thin films were deposited on (001) oriented SrTiO3 single crystal substrates at 120°C by liquid phase deposition. X-Ray diffraction, photoelectron and absorption spectroscopies revealed that cobalt substituted Ti4+ predominantly as low spin Co3+ in the as formed films as a result of the oxidizing environment of the growth solution. Enhanced ferromagnetism was observed in films when annealed in vacuum and air as Co3+ was reduced to Co 2+ with no evidence of cobalt metal clusters forming. The insulating nature of the films indicated that ferromagnetism was not carrier-mediated but due to percolation of bound magnetic polarons. © 2011 The Royal Society of Chemistry.||Source Title:||CrystEngComm||URI:||http://scholarbank.nus.edu.sg/handle/10635/116393||ISSN:||14668033||DOI:||10.1039/c0ce00112k|
|Appears in Collections:||Staff Publications|
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