Polarization coupling in epitaxial ZnO / BaTiO3 thin film heterostructures on SrTiO3 (100) substrates

Michael Lorenz, Matthias Brandt, Jürgen Schubert, Holger Hochmuth, Holger Von Wenckstern, Mathias Schubert, Marius Grundmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

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 SrRuO 3 layers on SrTiO3 (100) substrates with oxide SrRuO x, 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.

Original languageEnglish (US)
Title of host publicationZinc Oxide Materials and Devices II
DOIs
StatePublished - 2007
EventZinc Oxide Materials and Devices II - San Jose, CA, United States
Duration: Jan 21 2007Jan 24 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6474
ISSN (Print)0277-786X

Other

OtherZinc Oxide Materials and Devices II
CountryUnited States
CitySan Jose, CA
Period1/21/071/24/07

Keywords

  • Ferroelectric switching
  • Oxide heterostructures
  • Polarization coupling
  • Pulsed laser deposition
  • Wurtzite structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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