TITLE

Improved leakage and ferroelectric properties of Mn and Ti codoped BiFeO3 thin films

AUTHOR(S)
Kawae, T.; Terauchi, Y.; Tsuda, H.; Kumeda, M.; Morimoto, A.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p112904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Polycrystalline BiFeO3 (BFO), Ti-doped BFO, Mn-doped BFO, and (Mn, Ti)-codoped BFO (BFMT) thin films were fabricated on Pt/SrTiO3 (100) substrate by pulsed laser deposition. Observed leakage current behavior in those ion-doped BFO films indicated the dominance of space-charge-limited current in the high electric field region. The leakage current of the BFMT film was much reduced in relation to the other films due to the formation of deep traps. In the BFMT film, well saturated P-E hysteresis curves were observed. Remanent polarization and coercive field for maximum electric field of 2100 kV/cm were 75 μC/cm2 and 310 kV/cm, respectively.
ACCESSION #
43230395

 

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