We report the development of room-temperature ferromagnetism in chemically synthesized powder samples of Sn1-xFexO2 (0.005 = x = 0.10) and paramagnetic behavior in an identical set of Sn1-xFexO. The ferromagnetic Sn0·99Fe0·01O2 showed a Curie temperature Tc = 850 K, which is among the highest reported for dilute magnetic semiconductors. No evidence of dopant segregation was detected in Sn1-xFexO2 or Sn1-xFexO, suggesting that the emerging magnetic interactions in these systems are strongly related to the properties of the host systems SnO and SnO2.
Revised: April 7, 2011 |
Published: August 2, 2005
Citation
Punnoose A., J. Hays, A. Thurber, M.H. Engelhard, R.K. Kukkadapu, C.M. Wang, and V. Shutthanandan, et al. 2005.Development of High-Temperature Ferromagnetism in SnO2 and Paramagnetism in SnO by Fe Doping.Physical Review. B, Condensed Matter and Materials Physics 72, no. 5:054402 (14 p.).PNNL-SA-43236.