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Ferroelectric and piezoelectric properties of Gd3+ and Y 3+ modified PKN electroceramics

  • K. Sambasiva Rao
  • , D. Madhava Prasad
  • , P. Murali Krishna
  • , Joon Hyung Lee
  • Andhra University

Research output: Contribution to journal › Article › peer-review

Abstract

Ceramics with the composition Pb1-xK2x-3yM yNb2O6 (PKMN) with x = 0.29, y = 0.145 and M = Gd3+, Y3+ were synthesized by the solid-state reaction route between the corresponding oxides and carbonates. The crystal structure was confirmed by X-ray diffraction (XRD). The temperature dependence of dielectric properties were measured from 35 to 595°C. Well-developed P-E (polarization-electric field) hysteresis loops were observed in the materials. Determining the piezoelectric constants, Kp = 20%, Kt = 49%, d33 = 110, and quality factor, Qm = 33, reveals that the material Y3+-modified PKN can be useful for transducer applications.

Original languageEnglish
Pages (from-to)1515-1523
Number of pages9
JournalModern Physics Letters B
Volume22
Issue number15
DOIs
StatePublished - 20 Jun 2008

Keywords

  • Ceramics
  • Ferroelectricity
  • Piezoelectricity
  • XRD

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