Piezoelectric Properties of Fine-Grained Lead Zirconate Titanate Ceramics Modified with Pb(Sb1/2Nb1/2)O3.

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  • Tapaonoi Chanin
    Department of Electrical Engineering, The National Defence Academy, Hashirimizu, Yokosuka 239
  • Tashiro Shinjiro
    Department of Electrical Engineering, The National Defence Academy, Hashirimizu, Yokosuka 239
  • Igarashi Hideji
    Department of Electrical Engineering, The National Defence Academy, Hashirimizu, Yokosuka 239

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  • Piezoelectric Properties of Fine-Grained Lead Zirconate Titanate Ceramics Modified with Pb(Sb<sub>1/2</sub>Nb<sub>1/2</sub>)O<sub>3</sub>

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Sinterability, microstructure and piezoelectric properties were examined in the piezoelectric ceramics of the (1- x)Pb(Zr0.53Ti0.47)O3- xPb(Sb1/2Nb1/2)O3 ternary system. Pb(Sb1/2Nb1/2)O3 suppressed the grain growth of lead zirconate titanate (PZT) ceramics; the substitution with Pb(Sb1/2Nb1/2)O3 was effective to obtain fine-grained piezoelectric ceramics. Furthermore, the submicron grinding of calcined powder by ball-milling enabled densification even at the firing temperature of 1000° C. The piezoelectric ceramics having submicron-size grains were consequently obtained. The sample had an average grain size of 0.7 µ m and showed planar coupling factors (k p) around 0.65.

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