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Ultrathin BaTiO3 templates for multiferroic nanostructures
Axel Enders Publications
  • Xumen Chen, University of Nebraska-Lincoln
  • Seolun Yang, Sook-Myung Women’s University, Seoul, Korea
  • Ji-Hyun Kim, Sook-Myung Women’s University, Seoul, Korea
  • Hyung-Do Kim, Pohang Acceleration Laboratory (PAL), Pohang, Korea
  • Jae-Sung Kim, Sook-Myung Women’s University, Seoul, Korea
  • Geoffrey Rojas, University of Nebraska-Lincoln
  • Ralph Skomski, University of Nebraska-Lincoln
  • Haidong Lu, University of Nebraska-Lincoln
  • Anand Bhattacharya, Argonne National Laboratory
  • Tiffany Santos, Argonne National Laboratory
  • Nathan Guisinger, Argonne National Laboratory
  • Matthias Bode, Argonne National Laboratory
  • Alexei Gruverman, University of Nebraska-Lincoln
  • Axel Enders, University of Nebraska–Lincoln
Date of this Version
8-1-2011
Disciplines
Citation

New Journal of Physics 13 (2011) 083037 (10pp); doi:10.1088/1367-2630/13/8/083037

Comments

Copyright IOP Publishing Ltd and Deutsche Physikalische Gesellschaft

Abstract

The structural, electronic and dielectric properties of high-quality ultrathin BaTiO3 films were investigated. The films, which were grown by ozone-assisted molecular beam epitaxy on Nb-doped SrTiO3(001) substrates and have thicknesses as low as 8 unit cells (u.c.) (3.2 nm), are unreconstructed and atomically smooth with large crystalline terraces. A strain-driven transition to three-dimensional (3D) island formation is observed for films of 13 u.c. thickness (5.2 nm). The high structural quality of the surfaces, together with dielectric properties similar to bulk BaTiO3 and dominantly TiO2 surface termination, makes these films suitable templates for the synthesis of high-quality metaloxide multiferroic heterostructures for the fundamental study and exploitation of magneto-electric effects, such as a recently proposed interface effect in Fe/BaTiO3 heterostructures based on Fe–Ti interface bonds.

Citation Information
Xumen Chen, Seolun Yang, Ji-Hyun Kim, Hyung-Do Kim, et al.. "Ultrathin BaTiO3 templates for multiferroic nanostructures" (2011)
Available at: http://works.bepress.com/axel_enders/28/