We report high temperature ferromagnetism in Mn (3 - 4 at.%) doped optically transparent indium tin oxide (ITO) films prepared by a sol-gel based technique. The films showed 16 - 18 nm sized uniformly distributed particles with high phase purity. Magnetic measurements yield a coercivity Hc ~ 80 Oe and a saturation magnetization Ms ~ 0.39 ?B/Mn2+ ion at 300 K with a Tc > 600 K for the 3.2% Mn doped ITO film. Magnetic force microscopy showed convincing evidence of a uniformly distributed ferromagnetic phase with well defined magnetic domains spread over hundreds of independent nanoparticles.
Revised: April 7, 2011 |
Published: April 27, 2007
Citation
Reddy K.M., J. Hays, S. Kundu, L.K. Dua, P.K. Biswas, C.M. Wang, and V. Shutthanandan, et al. 2007.Effect of Mn doping on the structural, morphological, optical and magnetic properties of indium tin oxide films.Journal of Materials Science. Materials in Electronics 18, no. 12:1197-1201.PNNL-SA-46437.doi:10.1007/s10854-007-9277-6