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Structure transition and multiferroic properties of Mn-doped BiFeO3 thin films

  • Wenlong Liu
  • Guoqiang Tan
  • Guohua Dong
  • Xia Yan
  • Wei Ye
  • Huijun Ren
  • Ao Xia
Article

Abstract

Pure BiFeO3 (BFO) and Mn-doped BiFe1−yMnyO3 thin films were prepared on FTO/glass (SnO2: F) substrates by using a sol–gel method. The effects of Mn-doping on the structure and electric properties of the BFO thin films were studied. The X-ray diffraction (XRD) analysis reveals a structure transition in the Mn-doped BiFe0.96Mn0.04O3 (BFMO) thin film. The Rietveld refined XRD patterns conform the trigonal (R3c: H) and tetragonal (P422) symmetry for the BFO and BFMO thin films, respectively. The structure transition and the mixed valences of Mn ions substantially improve the electric properties of the BFMO thin film. The remnant polarization (P r) of the BFMO thin film was 105.86 μC/cm2 at 1 kHz in the applied electric field of 865 kV/cm. At an applied electric field of 150 kV/cm, the leakage current density of BFMO thin film is 1.42 × 10−5 A/cm2. It is about two orders of magnitude lower than that of the pure BFO thin film (1.25 × 10−3 A/cm2). And the enhanced saturated magnetization of the BFMO thin film is 4.45 emu/cm3.

Keywords

BiFeO3 Applied Electric Field Rietveld Refinement Ferroelectric Property Leakage Current Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work is supported by the Project of the National Natural Science Foundation of China (Grant No. 51372145); Research and Special Projects of the Education Department of Shaanxi Province (Grant No. 12JK0445); the Graduate Innovation Fund of Shaanxi University of Science and Technology (SUST-A04).

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Wenlong Liu
    • 1
  • Guoqiang Tan
    • 1
  • Guohua Dong
    • 1
  • Xia Yan
    • 1
  • Wei Ye
    • 1
  • Huijun Ren
    • 1
  • Ao Xia
    • 1
  1. 1.Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of EducationShaanxi University of Science and TechnologyXi’anChina

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