3DAP analysis of (Ga,Mn)As diluted magnetic semiconductor thin film

The distribution of Mn in a Ga0.963Mn0.037As ferromagnetic semiconductor film has been characterized by the three-dimensional atom probe (3DAP) technique. Atom probe specimens were directly prepared from the (Ga,Mn)As film grown epitaxially on a p-type GaAs substrate by the lift-out technique using a scanning electron microscope/focused ion beam system. The atom probe elemental map revealed that the Mn atoms in the Ga0.963Mn0.037As are uniformly dissolved without forming any nanometer-sized clusters. (C) 2008 Elsevier B.V. All rights reserved.