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Synthesis and dielectric/ferroelectric characteristics of Ta-modified PMN0.6·PZN0.2·PT0.2 ceramics

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Abstract

Ceramic powders of a [Pb(Mg1/3Nb2/3)O3]0.6·[Pb(Zn1/3Nb2/3)O3]0.2·[PbTiO3]0.2 system (with Nb replaced by Ta) were prepared via solid-state reaction routes. The structures developed in the B-site precursor and perovskite systems are discussed. Weak-field low-frequency dielectric characteristics as well as the polarization behavior of the perovskite ceramics are presented. The relaxation modes of the dielectric constant spectra are analyzed in terms of diffuseness parameters. A very high maximum dielectric constant of 37 900 (@1 kHz) was obtained when 1/4 of Nb was replaced by Ta. Internal microstructures of the sintered samples are also reported.

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Authors and Affiliations

  1. Department of Inorganic Materials Engineering, Kyungpook National University, 1370 Sankyuk-Dong, Buk-Gu, Daegu, 702-701, Korea

    Jee-Su Kim, Nam-Kyoung Kim & Jin-Ho Kim

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  1. Jee-Su Kim
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  2. Nam-Kyoung Kim
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  3. Jin-Ho Kim
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Kim, JS., Kim, NK. & Kim, JH. Synthesis and dielectric/ferroelectric characteristics of Ta-modified PMN0.6·PZN0.2·PT0.2 ceramics. Journal of Materials Science: Materials in Electronics 15, 307–311 (2004). https://doi.org/10.1023/B:JMSE.0000024231.06473.e4

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  • DOI: https://doi.org/10.1023/B:JMSE.0000024231.06473.e4

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