APL Materials (Aug 2013)

Contrasting behavior of the structural and magnetic properties in Mn- and Fe-doped In2O3 films

  • Qi Feng,
  • Harry J. Blythe,
  • Feng-Xian Jiang,
  • Xiao-Hong Xu,
  • Steve M. Heald,
  • A. Mark Fox,
  • Gillian A. Gehring

DOI
https://doi.org/10.1063/1.4818169
Journal volume & issue
Vol. 1, no. 2
pp. 022107 – 022107

Abstract

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We have observed room temperature ferromagnetism in In2O3 thin films doped with either 5 at.% Mn or Fe, prepared by pulsed laser deposition at substrate temperatures ranging from 300 to 600 °C. The dependence of saturation magnetization on grain size was investigated for both types of In2O3 films. It is revealed that, for the Mn-doped films, the magnetization was largest with small grains, indicating the importance of grain boundaries. In contrast, for Fe-doped films, the largest magnetization was observed with large grains.