Journal of the Korean Physical Society

, Volume 63, Issue 12, pp 2350–2353 | Cite as

Effect of Ta substitution on the dielectric and the piezoelectric properties of lead-free (Na0.53K0.47)0.96Li0.04(Nb1−x Ta x )O3 ceramics

  • Jin Soo Kim
  • Min Su Kim
  • Gyung Hyun Ryu
  • Myong Ho Kim
  • Tae Gone Park
  • Jongkyu Park
Article
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Accepted:

Abstract

Ta-substituted (Na0.53K0.47)0.96Li0.04(Nb1−x Ta x )O3 ceramics (NKLNT, x = 0.0, 0.013, 0.015, 0.017, 0.019, 0.021) were prepared through the solid-state reaction method. The crystallized NKLNT single phases were confirmed by using X-ray diffraction. Ta-substitution affected the dielectric behaviors and the piezoelectric properties. The enhanced piezoelectric coefficient d 33 and planar electromechanical coupling coefficient k p were estimated to be 232 pC/N and 0.46, respectively. The effects of Ta substitution on the temperature dependences of the dielectric and the piezoelectric properties were investigated at temperatures around the orthorhombic-tetragonal phase-transition temperature (T O-T ).

Keywords

Ferroelectrics Dielectric Na0.5K0.5NbO3(NKN) ABO3 perovskite P-E hysteresis loop Piezoelectric Lead free 
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Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • Jin Soo Kim
    • 1
  • Min Su Kim
    • 1
  • Gyung Hyun Ryu
    • 1
  • Myong Ho Kim
    • 1
  • Tae Gone Park
    • 2
  • Jongkyu Park
    • 2
  1. 1.School of Nano and Advanced Materials EngineeringChangwon National UniversityChangwonKorea
  2. 2.School of Mechatronics EngineeringChangwon National UniversityChangwonKorea

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