Dielectric behavior and microstructure of (Bi 1/2 Na 1/2) TiO 3 - (Bi 1/2 K 1/2) TiO 3 - BaTiO 3 lead-free piezoelectric ceramics

X. X. Wang, S. H. Choy, X. G. Tang, H. L.W. Chan

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(0.95-x) (Bi12 Na12) TiO3 -x (Bi12 K12) TiO3 -0.05 BaTiO3 lead-free piezoelectric ceramics (abbreviated as BNT-BKT-BT100x with x varying from 0 to 20 mol %) are prepared by a solid-state reaction process. Variation of the dielectric properties and microstructure of BNT-BKT-BT100x ceramics with BKT content is studied. The results indicate that the relative permittivity εr and loss tangent tan δ vary with the BKT amount. Scanning electron microscope observation also indicates that BKT in high amount affects the microstructure. X-ray diffraction analysis shows that the incorporated BKT diffuses into the BNT-BT lattice to form a solid solution during sintering.

Original languageEnglish
Article number104101
JournalJournal of Applied Physics
Issue number10
Publication statusPublished - 15 May 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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