Dresden 2020 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 5: Cooperative Phenomena and Phase Transitions (joint session MA/TT)
MA 5.3: Vortrag
Montag, 16. März 2020, 10:00–10:15, HSZ 401
Control of structure and physical properties of La0.7Sr0.3MnO3 thin films via oxygen stoichometry — Lei Cao1, •Oleg Petracic1, Paul Zakalek1, Alexander Weber2, Ulrich Rücker1, Jürgen Schubert3, Alexandros Koutsioubas2, Stefan Mattauch2, and Thomas Brückel1 — 1Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institut (PGI-4), JARA-FIT Forschungszentrum Jülich GmbH, Jülich — 2Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ) Forschungszentrum Jülich GmbH, Garching — 3Peter Grünberg Institute (PGI9-IT) JARA-Fundamentals of Future Information Technology Forschungszentrum Jülich GmbH, Jülich
Epitaxial thin films of La0.7Sr0.3MnO3 were prepared by high oxygen pressure sputter deposition on SrTiO3 substrates at various oxygen partial pressures. In addition, we performed after preparation systematic oxygen desorption and absorption studies by thermal annealing or oxygen plasma processing, respectively. We derive a phase diagram with respect to the crystal structure (Perovskite vs. Brownmillerite), the magnetic behavior (ferromagnetic vs. antiferromagnetic) and the transport properties (metallic vs. insulating) for various annealing conditions.