Ferroelectric Properties Improvement of Mn-Doped 0.7BiFeO3-0.3BaTiO3 Thin Films Fabricated by Chemical Solution Deposition

Yuya Ito; Makoto Moriya; Wataru Sakamoto; Toshinobu Yogo

doi:10.4028/www.scientific.net/KEM.566.159

Paper Titles

Microscopic Conduction Behavior Analysis on ZrO₂-Based Ion Conductors by Wideband Conductivity Measurement
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The Microstructure of Titanium Oxide Films for Dye-Sensitized Solar Cells
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Effects of Annealing Process on the Structure of Mn-Doped BiFeO₃ Thin Films
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Ferroelectric Properties Improvement of Mn-Doped 0.7BiFeO₃-0.3BaTiO₃ Thin Films Fabricated by Chemical Solution Deposition
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Fabrication of BiFeO₃-Bi(Zn_1/2Ti_1/2)O₃ Solid Solution Thin Films Using Perovskite-Type Oxide Interface Layer
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 566Ferroelectric Properties Improvement of Mn-Doped...

Ferroelectric Properties Improvement of Mn-Doped 0.7BiFeO₃-0.3BaTiO₃ Thin Films Fabricated by Chemical Solution Deposition

Abstract:

Ferroelectric 0.7BiFeO₃-0.3BaTiO₃ and 0.7BiFe_0.95Mn_0.05O₃-0.3BaTiO₃thin films were prepared by the chemical solution deposition. Perovskite single-phase thin films with homogeneous surface morphology were successfully fabricated at 700°C on Pt/TiO_x/SiO₂/Si substrates. Although typical polarization (P)-electric field (E) hysteresis loops were observed for 0.7BiFeO₃-0.3BaTiO₃ thin films, their insulation resistance was relatively low at room temperature. Mn doping for Fe site of the 0.7BiFeO₃-0.3BaTiO₃ was very effective in improving leakage current properties. In 0.7BiFe_0.95Mn_0.05O₃-0.3BaTiO₃ thin films, the abrupt increase in leakage current was suppressed even at high electric fields, leading to the well-shaped P-E hysteresis loops at ambient temperatures. Remanent polarization and coercive field of the 0.7Bi (Fe_0.95Mn_0.05)O₃-0.3Bi_0.5Na_0.5TiO₃ films at room temperature were approximately 26 μC/cm² and 130 kV/cm, respectively.

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Periodical:

Key Engineering Materials (Volume 566)

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159-162

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.566.159

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Online since:

July 2013

Authors:

Yuya Ito, Makoto Moriya, Wataru Sakamoto, Toshinobu Yogo

Keywords:

BiFeO₃-BaTiO₃, Chemical Solution Deposition, Ferroelectric Properties, Thin Film

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