Improved Electrical Properties of Nd-Substituted SrBi4Ti4O15 Ferroelectric Ceramics
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Bi-layered oxides SrBi4Ti4O15(SBTi) and Nd-substituted SrBi4Ti4O15(SBNTi) ferroelectric ceramics were prepared by solid-state reaction methods. At an applied field of 200 kV/cm, the remnant polarization and coercive field (2Pr, Ec) of the SBNTi and SBTi ceramics were (21.1 μC/cm2, 101.4 kV/cm) and (10.9 μC/cm2, 82.9 kV/cm), respectively, showing a significantly increase of Pr. Both ceramics demonstrated fatigue-free properties up to 1.44×1010 cycles. The improved temperature-independent dielectric constant and dissipation factor (ε, tan δ) of the SBNTi ceramics than the SBTi ones were also demonstrated experimentally These results provide some guideline to search for new material with large Pr, high Tc, fatigue-free characteristics, and high resistivity.
- 公益社団法人 日本セラミックス協会の論文
公益社団法人 日本セラミックス協会 | 論文
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