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DS: Fachverband Dünne Schichten

DS 12: Poster

DS 12.25: Poster

Mittwoch, 29. März 2023, 17:00–19:00, P3

Characterization of structural and magnetic properties of SrRuO₃ thin films — •Vitor de Oliveira Lima¹, Mai Hussein Hamed¹, Connie Bednarski-Meinke¹, Michael Faley², Emmanuel Kentzinger¹, and Thomas Brückel¹ — ¹Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), JARA-FIT, Forschungszentrum Jülich GmbH, Germany. — ²Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ERC), Forschungszentrum Jülich GmbH, Germany.

Proximity effects in Ferromagnet/Superconductor Heterostructures (F/S-H) have demonstrated high potential for development of new devices for spintronic and quantum computing application. SrRuO₃ (SRO) has attracted much attention among transition metal oxides for being the only 4d oxide to show itinerant ferromagnetism and metallic conductivity. In this work, we are characterizing the crystal structure as well the magnetic properties of SRO thin films for further application in F/S-H with YBa₂Cu₃O_7−x superconducting films. The samples were prepared on STO (001) single crystals by High-Oxygen Pressure Sputtering. SRO thin films are epitaxial and have smooth surface. Magnetometry indicate that samples have out-of-plane magnetic anisotropy and paramagnetic-ferromagnetic transition at approximately 150 K, which corresponds to the SRO with Ru⁴⁺ Curie temperature, and two transitions at lower temperatures, that may be related to another Ru oxidation state. The samples stoichiometry will be further investigated by Rutherford Backscattering Spectroscopy.