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Dielectric and piezoelectric properties of 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 ceramics with Ag2O contents

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Abstract

Lead-Free ceramics 0.95(Na0.5K0.5)NbO3-0.05CaTiO3-x mol. % Ag2O have been fabricated as a function of the amount of Ag2O content. NKN-CT ceramics showed the highest piezoelectric properties and ferroelectric properties at the 0.5 mol. %Ag2O content. The NKN-CT-Ag2O0.5 mol. % ceramics show a good performance with piezoelectric constant d 33 = 221 ρC/N, k p = 0.38%, respectively. The corresponding Curie temperature and remnant polarization reached 370°C and 22.5 µC/cm2, respectively. These results appear that NKN-CTAg2O ceramics are promising candidate materials for lead-free piezoelectric application.

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Authors and Affiliations

  1. Dept. of Electronics Materials Engineering, Kwangwoon University, Seoul, 139-701, Korea

    Seung-Hwan Lee, Sang-Don Baek, Hyun-Ju Kim, Seung-Hyun Kim & Young-Hie Lee

  2. Dept. of Ceramic Engineering, Engineering Research Institute, Gyeongsang National University, Jinju, 660-701, Korea

    Sung-Gap Lee & Dae-Young Kim

  3. Dept. of Smart Grid Research, Korea Electrotechnology Research Institute, Changwon, 642-120, Korea

    Sung-Pill Nam

  4. R&D Center, Hardram, Seongnam, 301-305, Korea

    Ku-Tak Lee

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  1. Seung-Hwan Lee
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  2. Sang-Don Baek
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  3. Hyun-Ju Kim
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  4. Seung-Hyun Kim
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  6. Dae-Young Kim
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  7. Young-Hie Lee
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  8. Sung-Pill Nam
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Correspondence to Young-Hie Lee.

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Lee, SH., Baek, SD., Kim, HJ. et al. Dielectric and piezoelectric properties of 0.95(Na0.5K0.5)NbO3-0.05CaTiO3 ceramics with Ag2O contents. Electron. Mater. Lett. 8, 577–580 (2012). https://doi.org/10.1007/s13391-012-2072-4

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  • DOI: https://doi.org/10.1007/s13391-012-2072-4

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