Charge imbalance and magnetic properties at the Fe3O 4/BaTiO3 interface

Min Sik Park, Jung Hwan Song, Arthur J. Freeman

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The electronic structure and physical properties at the interface in the superlattice Fe3 O4 / BaTiO3 were investigated by using the first-principles all-electron full-potential linearized augmented plane-wave method. The loss of half metallicity of bulk Fe3 O4 in the multiferroic superlattice Fe3 O4 / BaTiO3 is related to the charge imbalance effect at the interface. The effect of strain strongly influences the Fe magnetic moments and the spin-polarized carriers at the interface. Oxygen vacancies are shown to recover the almost half-metallic ground state in the superlattice. The effects of the charge imbalance, the strain, and the oxygen vacancies at the interface in the superlattice Fe3 O4 / BaTiO3 can be applied to designing better multifunctional oxide-based systems.

Original languageEnglish
Article number024420
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number2
DOIs
Publication statusPublished - Jan 5 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Charge imbalance and magnetic properties at the Fe<sub>3</sub>O <sub>4</sub>/BaTiO<sub>3</sub> interface'. Together they form a unique fingerprint.

  • Cite this