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Publications::
Chopdekar, R.V.; Heidler, J.; Piamonteze, C.; Takamura, Y.; Scholl,A.; Rusponi, S.; Brune, H.; Heyderman, L.J.; Nolting, F. Strain-dependent magnetic configurations in manganite-titanate heterostructures probed with soft X-ray techniques THE EUROPEAN PHYSICAL JOURNAL B 86 (2013), 241 We present a detailed study on the strain-induced magnetic domain structure of a (La,Sr)MnO3
thin film epitaxially grown on a BaTiO3 substrate through the use of polarization-dependent X-ray photoemission
electron microscopy and X-ray absorption spectroscopy. Angular-dependent measurements allow
us to detect vector magnetization on a single-domain scale, and we relate the strain-induced changes
in magnetic anisotropy of the ferromagnetic film to the ferroelectric domain structure of the underlying
substrate using X-ray magnetic circular and linear dichroism spectro-microscopy. Comparisons to measurements
on a nearly strain free film of (La,Sr)MnO3 grown on a (La,Sr)(Al,Ta)O3 substrate illustrate
that the BaTiO3 ferroelectric domain structure imprints specific domain sizes and wall orientations in
the (La,Sr)MnO3/BaTiO3 artificial multiferroic heterostructure. Furthermore, a change of the BaTiO3
ferroelectric domain structure either with temperature or with applied electric field results in a corresponding
change in the (La,Sr)MnO3 ferromagnetic domain structure, thus showing a possible route to
obtain room-temperature electric field control of magnetic anisotropy at the nanoscale. View/Download |
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