Magnetism and structure of anatase (Ti 1-xV x)O 2 films

D. Le Roy; S. Valloppilly; R. Skomski; S. H. Liou; D. J. Sellmyer

doi:10.1063/1.3679434

Magnetism and structure of anatase (Ti _1-xV _x)O ₂ films

D. Le Roy, S. Valloppilly, R. Skomski, S. H. Liou, D. J. Sellmyer

Research output: Contribution to journal › Article

3 Scopus citations

Abstract

Anatase TiO ₂ is known as a promising host material for a wide-gap ferromagnetic semiconductor as it is a good solvent for numerous transition-metal elements. We report on the structural and magnetic properties of epitaxially grown anatase (Ti _1-xV _x)O ₂ layers where x covers the whole range of solubility of V atoms in anatase TiO ₂ and beyond the solubility limit of 21. We measured an average magnetic moment per vanadium as high as 1 μ _B with a magnetic percolation threshold of less than 6 which agrees with recent theoretical predictions. Interestingly, our results show a decrease of the average V magnetic moment as x increases throughout the solubility range. Anatase (Ti _1-xV _x)O ₂ is no longer present beyond the solubility limit, where the nonmagnetic VO ₂ phase forms and destroys the net magnetization.

Original language	English (US)
Article number	07C118
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3679434
State	Published - Apr 1 2012

ASJC Scopus subject areas

Physics and Astronomy(all)

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Le Roy, D., Valloppilly, S., Skomski, R., Liou, S. H., & Sellmyer, D. J. (2012). Magnetism and structure of anatase (Ti _1-xV _x)O ₂ films. Journal of Applied Physics, 111(7), [07C118]. https://doi.org/10.1063/1.3679434

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