DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF BARIUM-SUBSTITUTED Sr1.9Ca0.1NaNb5O15 CERAMICS

DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF BARIUM-SUBSTITUTED Sr1.9Ca0.1NaNb5O15 CERAMICS

Highly dense piezoelectric ceramics of tungsten bronze-type (Sr1.9Ca0.1)1-0.5xBaxNaNb5O15 (where x=0.1-0.8) were prepared by spark plasma sintering. The crystallographic parameters, dielectric behaviors and piezoelectric properties of the sintered ceramics were investigated, and the effects of the B...

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Veröffentlicht in:Jpn.J.Appl.Phys ,Part 1. Vol. 42, no. 12, pp. 7404-7409. 2003 Part 1. Vol. 42, no. 12, pp. 7404-7409. 2003, 2003-12, Vol.42 (12), p.7404-7409
Hauptverfasser: R-J, Xie, Akimune, Y, Wang, R, Hirosaki, N, Nishimura, T
Format: Artikel
Sprache:eng
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Zusammenfassung:Highly dense piezoelectric ceramics of tungsten bronze-type (Sr1.9Ca0.1)1-0.5xBaxNaNb5O15 (where x=0.1-0.8) were prepared by spark plasma sintering. The crystallographic parameters, dielectric behaviors and piezoelectric properties of the sintered ceramics were investigated, and the effects of the Ba substitution on these electrical properties were discussed. The structural analysis and the electrical property measurements indicate a morphotropic phase boundary (MPB)-like phenomenon at x=0.4-0.5. In all compositions, a diffuse phase transition and a relaxor behavior are observed. The electrical properties are found to be crystallographically dependent. 19 refs.
ISSN:0021-4922
DOI:10.1143/jjap.42.7404