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Properties of neodymium-doped Ca0.15Sr1.85Bi4Ti5O18 ferroelectric ceramics

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Abstract

Bismuth-layered compound Ca0.15Sr1.85Bi4−xNdxTi5O18 (CSBNT, x = 0–0.25) ferroelectric ceramics samples were prepared by solid-state reaction method. The effects of Nd3+ doping on their ferroelectric and dielectric properties were investigated. The remnant polarization Pr of CSBNT ceramics increases at beginning then decreases with increasing of Nd3+ doping level, and a maximum Pr value of 9.6 μC/cm2 at x = 0.05 was detected with a coercive field Ec = 80.2 kV/cm. Nd3+ dopant not only decreases the Curie temperature linearly, but also the dielectric constant (εr) and dielectric loss tangent (tan δ). The magnitudes of εr and tan δ at the frequency of 100 kHz are estimated to be 164 and 0.0083 at room temperature, respectively.

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Acknowledgments

The work was jointly supported by National Natural Science Foundation of China (No.50872075). The authors are grateful to Y.S. Chai for helpful discussions.

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Authors and Affiliations

  1. College of Material Science and Engineering, Shandong Jianzhu University, Jinan, 250101, People’s Republic of China

    Suhua Fan, Fengqing Zhang, Guitao Liu & Qingbo Tian

  2. State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China

    Luyi Zhu

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  1. Suhua Fan
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  2. Fengqing Zhang
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  3. Guitao Liu
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  4. Qingbo Tian
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Correspondence to Fengqing Zhang.

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Fan, S., Zhang, F., Liu, G. et al. Properties of neodymium-doped Ca0.15Sr1.85Bi4Ti5O18 ferroelectric ceramics. J Mater Sci: Mater Electron 22, 1778–1782 (2011). https://doi.org/10.1007/s10854-011-0362-5

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  • DOI: https://doi.org/10.1007/s10854-011-0362-5

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