Transactions on Electrical and Electronic Materials

  • 제11권3호
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  • Pages.126-129
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  • 2010
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  • 1229-7607(pISSN)
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  • 2092-7592(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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The Piezoelectric Properties of (Na0.5K0.5)NbO3-K4CuNb8O23 Ceramics with Various K4CuNb8O23 Doping and Sintering Temperatures

  • 투고 : 2010.01.22
  • 심사 : 2010.05.07
  • 발행 : 2010.06.25
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초록

(1-X) $(Na_{0.5}K_{0.5})NbO_3-X$ $K_4CuNb_8O_{23}$ (NKN-X KCN) ceramics were produced using the conventional solid state sintering method, and their sinterability and electric properties were investigated. The density, dielectric constant (${\varepsilon}_r$), piezoelectric constant $d_{33}$, electromechanical coupling factor $k_p$ and mechanical quality factor $Q_m$ value of the NKN ceramics depended upon the KCN content and the sintering temperature. In particular, the KCN addition to the NKN greatly improved the mechanical quality factor $Q_m$ value. The ceramic with X = 2.0 mol% sintered at $1,150^{\circ}C$ possesses the optimum properties (${\varepsilon}_r=241$, $d_{33}=78$, $k_p=0.34$ and $Q_m=1,121$). These results indicate that the ceramic is a promising candidate material for applications in lead free piezoelectric transformer and filter materials.

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참고문헌

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피인용 문헌

  1. Dielectric, piezoelectric properties and temperature stability in modified (Na,K,Li)(Nb,Ta)O3 ceramics for piezoelectric energy harvesting device vol.33, pp.3-4, 2014, https://doi.org/10.1007/s10832-014-9948-7
  2. Piezoelectric and dielectric properties of 0.98(Na0.5K0.5)NbO3–0.02Ba(ZrxTi(1−x))O3 ceramics vol.47, pp.10, 2012, https://doi.org/10.1016/j.materresbull.2012.04.095
  3. Investigation of dielectric and electrical properties of Mn doped sodium potassium niobate ceramic system using impedance spectroscopy vol.110, pp.10, 2011, https://doi.org/10.1063/1.3660267
  4. Polymorphic Phase Transition and Temperature Coefficient of Capacitance of Alkaline Niobate Based Ceramics vol.14, pp.2, 2013, https://doi.org/10.4313/TEEM.2013.14.2.78