Epitaxial LSMO thin films with correlation of electrical and magnetic properties above 400K

• DOI: 10.1016/j.apsusc.2014.04.045
• Publication Date: 2014-04-15T19:31:31Z
• Authors: V. Štrbík; M. Reiffers; E. Dobročka; J. Šoltýs; M. Španková; Š. Chromik
• Keywords: Metal–insulator transition

Abstract We have prepared La0.67Sr0.33MnO3 (LSMO) thin films of 100 nm thickness with enhanced temperature of metal–insulator transition TMI ≥ 400 K on MgO (0 0 1) substrates. The X-ray diffraction measurements (θ–2θ scan, ω-scan and ϕ-scan) show a c-axis oriented in-plane heteroepitaxial growth of the LSMO on the MgO. Sensitive magnetic measurements of the LSMO susceptibility confirm the correlation of metal–insulator and ferromagnetic–paramagnetic transitions at temperature of TMI = 406 K and so the coincidence with double exchange theory.