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

  title={Improved leakage and ferroelectric properties of Mn and Ti codoped BiFeO3 thin films},
  author={Takeshi Kawae and Yuki Terauchi and Hisashi Tsuda and Minoru Kumeda and Akiharu Morimoto},
  journal={Applied Physics Letters},
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… 

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