Structural properties of [(La0.7Sr0.3MnO3/SrTiO3)]15 superlattices prepared by pulsed injection-MOCVD

Abstract

[La0.7Sr0.3MnO3/SrTiO3]15 superlattices (LSMO/STO) with different thickness of STO or LSMO layers were grown on the (001) surface of single crystal substrates (LaAlO3, SrTiO3 and MgO) by pulsed liquid-injection MOCVD. Structural properties of the deposited superlattices were investigated by X-ray diffraction analysis. Θ/Θ2 scans indicated that LSMO and STO layers are highly (001) oriented and showed the satellite peaks characteristic of a superlattice structure. It was observed that the strain state in the superlattices depends on the relative thickness of the LSMO and STO layers and on the substrate nature.