Polydomain configuration in epitaxial Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3 heterostructures

Polydomain configuration in epitaxial Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3 heterostructures

In epitaxial heterostructures Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3/MgO(001) with a large lattice mismatch, ferroelectric domains and properties were experimentally studied. In 130 nm thick polydomain tetragonal Pb0.5Sr0.5TiO3 films, random arrays of ∼0.1–0.5 μm sized a- and c-domains are found. In vertical...

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Veröffentlicht in:Applied physics letters 2010-11, Vol.97 (20)
Hauptverfasser: Plekh, M., Narkilahti, J., Levoska, J., Tyunina, M.
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Narkilahti, J.
Levoska, J.
Tyunina, M.
description In epitaxial heterostructures Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3/MgO(001) with a large lattice mismatch, ferroelectric domains and properties were experimentally studied. In 130 nm thick polydomain tetragonal Pb0.5Sr0.5TiO3 films, random arrays of ∼0.1–0.5 μm sized a- and c-domains are found. In vertical capacitors with Pt top electrodes, a steplike switching of polarization is observed. The results are discussed in terms of island growth and different switching mechanisms in a- and c-domains.
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title Polydomain configuration in epitaxial Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3 heterostructures
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