dc leakage behavior and conduction mechanism in (BiFeO3) m(SrTiO3)m superlattices

R. Ranjith*, W. Prellier, Jun Wei Cheah, Junling Wang, Tao Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Leakage current behavior of (BiFeO3)m(SrTiO 3)m superlattice structures was studied and analyzed at different temperatures (303-473 K) in the light of various models. While bulk limited Poole-Frenkel emission was observed to dominate the leakage current in the temperature range of 303-383 K, the space charge limited conduction was observed up to 473 K. With a Poole-Frenkel emission type of conduction, the activation energy range of ∼0.06-0.25 eV was calculated. The physical parameters, calculated from the analysis, correlate with the intrinsic properties. Such analysis of leakage current facilitates interface engineering of heterostructures for device applications.

Original languageEnglish (US)
Article number232905
JournalApplied Physics Letters
Volume92
Issue number23
DOIs
StatePublished - Jun 20 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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