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Proceedings Paper

Polarization coupling in epitaxial ZnO / BaTiO3 thin film heterostructures on SrTiO3 (100) substrates
Author(s): Michael Lorenz; Matthias Brandt; Jürgen Schubert; Holger Hochmuth; Holger von Wenckstern; Mathias Schubert; Marius Grundmann
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Paper Abstract

Strong polarization coupling is expected by combining ferroelectric materials with switchable polarization and wurtzite layers exhibiting a permanent spontaneous polarization. To demonstrate these charge coupling effects, current-voltage, conductivity-frequency and capacitance-frequency (admittance) characteristics have been measured on epitaxial heterostructures grown of ferroelectric BaTiO3 (001) films on conducting SrRuO3 layers on SrTiO3 (100) substrates with oxide SrRuOx, metallic Pt and semiconducting ZnO top electrodes. The electrical measurements show clear indications for polarization coupling of the ferroelectric perovskite BaTiO3 and the piezoelectric wurtzite ZnO thin films.

Paper Details

Date Published: 20 February 2007
PDF: 9 pages
Proc. SPIE 6474, Zinc Oxide Materials and Devices II, 64741S (20 February 2007); doi: 10.1117/12.715217
Show Author Affiliations
Michael Lorenz, Univ. Leipzig (Germany)
Matthias Brandt, Univ. Leipzig (Germany)
Jürgen Schubert, Forschungszentrum Jülich GmbH (Germany)
Holger Hochmuth, Univ. Leipzig (Germany)
Holger von Wenckstern, Univ. Leipzig (Germany)
Mathias Schubert, Univ. of Nebraska, Lincoln (United States)
Marius Grundmann, Univ. Leipzig (Germany)

Published in SPIE Proceedings Vol. 6474:
Zinc Oxide Materials and Devices II
Ferechteh Hosseini Teherani; Cole W. Litton, Editor(s)

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