(Pb//1// minus //x//,Bi//x) (Ti//1// minus //x ,(Fe//1// minus //y, Mn//y )//x )O//3- POLYMER 0-3 COMPOSITES FOR HYDROPHONE APPLICATIONS.

J. R. Giniewicz, K. Duscha, R. E. Newnham, A. Safari

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations

Abstract

The hydrostatic piezoelectric response of composite materials incorporating (Pb//1// minus //xBi//x) (Ti//1// minus //xFe//x)O//3 ceramic fillers from the highly anisotropic tetragonal region of the solid solution system in the vicinity of the morphotropic phase boundary were measured and compared. The considerable difficulty in poling and, hence, the diminished piezoelectric response encountered as the composition of the filler is shifted closer to the phase boundary was determined to be largely due to the high conductivity of the BiFeO//3 -rich compositions. The ceramic was modified with Mn in an attempt to lower its conductivity. Composites incorporating the Mn-doped filler poled more efficiently and ultimately achieved hydrostatic figures of merit, d//h g//h , significantly better than those observed for the undoped samples. Among the samples investigated, the highest hydrostatic figures of merit were exhibited by samples containing the doped and undoped x equals 0. 5 fillers. The hydrostatic response remains stable over a broad pressure range.

Original languageEnglish (US)
Pages323-327
Number of pages5
StatePublished - 1986
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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