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MA: Fachverband Magnetismus
MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)
MA 63.45: Poster
Friday, March 18, 2011, 11:00–14:00, P2
Defect-induced ferromagnetism in crystalline SrTiO3 — •Julia Osten1, Kay Potzger1, Alexander. A. Levin2, Artem Shalimov1, Georg Talut1, Helfried Reuther1, Seda Arpaci1, Danilo Bürger1, Heidemarie Schmidt1, Tina Nestler3, and Dirk C. Meyer3 — 1Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany — 2Institut für Strukturphysik, Technische Universität Dresden, 01062 Germany — 3Institut für Experimentelle Physik, Technische Universität Bergakademie Freiberg, 09596 Freiberg
Ion irradiation of high-quality SrTiO3 single crystals leads to room-temperature ferromagnetism. Structural analysis revealed oxygen deficient (polycrystalline) SrTiO3, Sr2Ti6O13, or Ruddlesden-Popper like secondary phases at the sample surface induced by the irradiation. The lack of potentially ferromagnetic secondary phases suggests defects to be the origin of the observed ferromagnetic signal.