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Dresden 2014 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 74: Surface and Interface Magnetism II (O jointly with MA)

O 74.3: Vortrag

Donnerstag, 3. April 2014, 11:00–11:15, WIL C107

Control of ferromagnetism in epitaxial La0.7Sr0.3MnO3 films via BaTiO3 substrate phase transitions investigated by XMCD and XLD — •Arndt Quer1, Erik Kröger1, Kerstin Hanff1, Lars Oloff1, Rohit Soni2, Adrian Petraru2, Matthias Kalläne1, Herrmann Kohlstedt2, Lutz Kipp1, and Kai Rossnagel11Institute of Experimental and Applied Physics, University of Kiel, Germany — 2Department of Nanoelectronics, University of Kiel, Germany

It is known that La0.7Sr0.3MnO3 thin films grown on BaTiO3 can undergo strain-controlled giant, sharp, and persistent magnetization changes as a result of substrate structural phase transitions. In order to investigate the interplay between lattice strain, magnetism, and electronic structure in this system, we have performed X-ray magnetic circular dichroism (XMCD) and X-ray linear dichroism (XLD) measurements on 20-nm thin, epitaxial La0.7Sr0.3MnO3 films grown by pulsed laser deposition on single-crystalline BaTiO3. Here, we report the obtained results. Experiments were performed at the BACH beamline of the Elettra syncrotron storage ring (Trieste, Italy). This work was supported by the DFG (German Research Foundation) through SFB 855 (Collaborative Research Centre 855) "Magnetoelectric Composites - Future Biomagnetic Interfaces".

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