Band gap and Schottky barrier heights of multiferroic BiFeO3

Clark, S.J.; Robertson, J.

Abstract

BiFeO3 is an interesting multiferroic oxide and a potentially important Pb-free ferroelectric. However, its applications can be limited by large leakage currents. Its band gap is calculated by the density-functional based screened exchange method to be 2.8eV, similar to experiment. The Schottky barrier height on Pt or SrRuO3 is calculated in the metal induced gap state model to be over 0.9eV. Thus, its leakage is not intrinsic.

Citation

Clark, S., & Robertson, J. (2007). Band gap and Schottky barrier heights of multiferroic BiFeO3. Applied Physics Letters, 90(13), Article 132903. https://doi.org/10.1063/1.2716868

• Journal Article Type: Article
• Acceptance Date: Feb 20, 2007
• Publication Date: Mar 26, 2007
• Deposit Date: Jan 31, 2012
• Publicly Available Date: Aug 18, 2015
• Journal: Applied Physics Letters
• Print ISSN: 0003-6951
• Electronic ISSN: 1077-3118
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 90
• Issue: 13
• Article Number: 132903
• DOI: https://doi.org/10.1063/1.2716868
• Public URL: https://durham-repository.worktribe.com/output/1486601