The effect of film thickness on the magnetic and magneto-transport properties of Sr2FeMoO6 thin films

Abstract

Magnetoresistive Sr2FeMoO6 thin films were grown by pulsed laser deposition with three dierent thicknesses 150 nm, 270 nm and 500 nm. Structural, magnetic and magneto-transport properties of the films were measured. Structural properties showed that impurity phases are formed when the film thickness exceed limiting thickness over 300 nm. Otherwise no major dierences were observed in structural and magnetic properties between the films. The semiconductive upturn was observed in all ρ(T) curves, but it was notably smaller for the two thickest films. At 350 K the magnetoresistive (MR) behaviour was very similar for all the films, but at 10 K the negative MR was clearly largest for the thickest film and also the shape of the curve in low fields deviated from others. © 2013 Owned by the authors, published by EDP Sciences.