Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 22: Correlated Electrons: Low-dimensional Systems - Materials 1
TT 22.1: Vortrag
Mittwoch, 28. März 2012, 09:30–09:45, H 0104
Magnetic properties of ultra-thin layer of LCMO in oxides heterostructures — •Soltan Soltan1,2, Joachim Albrecht3, Eberhard Goering4, Georg Christiani1, Gennady Logvenov1, and Hanns-Ulrich Habermeier1 — 1Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany — 2Physics Department, Faculty of Science, Helwan University,11792-Cairo, Egypt — 3Hochschule Aalen, Beethovenstr. 1, 73430 Aalen, Germany — 4Max-Planck-Institut fue Intelligent System, Heisenbergstr. 3, D-70569 Stuttgart, Germany
We investigate the variety of high quality magnetic heterostructures of different nonmagnetic oxides (YBCO and LNO) with magnetic LCMO layers grown by PLD on single crystal substrate SrTiO3 with <100> and <110> orientations. We have used the X-ray diffraction to characterize the quality of these heterostructures including crystal structure and interface roughness. We have measured magnetization of these heterostructures at different temperatures and magnetic fields by using SQUID magnetometer. It has been found that a single LCMO layer with thickness of 2-3 unit cells shows ferromagnetism with a Curie temperature close to the bulk value. We present detailed discussion of the magnetic properties of the ultrathin LCMO layers in these heterostructures.