Ferromagnetism in Fe-doped SnO2 thin films

J. M. D. Coey; A. P. Douvalis; C. B. Fitzgerald; M. Venkatesan

doi:10.1063/1.1650041

Ferromagnetism in Fe-doped SnO2 thin films

Condensed Matter 2009-11-10 v1

Authors: J. M. D. Coey , A. P. Douvalis , C. B. Fitzgerald , M. Venkatesan

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Thin films grown by pulsed-laser deposition from targets of Sn0.95Fe0.05O2 are transparent ferromagnets with Curie temperature and spontaneous magnetization of 610 K and 2.2 Am2kg-1, respectively. The 57Fe Mossbauer spectra show the iron is all high-spin Fe3+ but the films are magnetically inhomogeneous on an atomic scale, with only 23 % of the iron ordering magnetically. The net ferromagnetic moment per ordered iron ion, 1.8 Bohr magnetons, is greater than for any simple iron oxide. Ferromagnetic coupling of ferric ions via an electron trapped in a bridging oxygen vacancy (F center) is proposed to explain the high Curie temperature

Keywords

ferromagnetism thin film magnetism thin films

Cite

@article{arxiv.cond-mat/0401293,
  title  = {Ferromagnetism in Fe-doped SnO2 thin films},
  author = {J. M. D. Coey and A. P. Douvalis and C. B. Fitzgerald and M. Venkatesan},
  journal= {arXiv preprint arXiv:cond-mat/0401293},
  year   = {2009}
}

Comments

13 pages, 4 figures, to be published in Applied Physics Letters (Feb. 2004)

Ferromagnetism in Fe-doped SnO2 thin films

Abstract

Keywords

Cite

Comments

Related papers