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

Abstract

We have observed room temperature ferromagnetism in In2O 3 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. © 2013 Author(s).