Influence of growth temperature on structural and magnetic characterization of (In, Cr)As quantum dots

(In, Cr)As ferromagnetic semiconductor quantum dots (QDs) were grown by molecular beam epitaxy on GaAs (001) substrates. The growth temperature effects on structure and magnetism of the QDs were investigated systematically. The Cr2+3d4 states and quantum confined effect are assumed to play an important role in the room-temperature ferromagnetism of (In, Cr)As QDs.