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Poling of Coprecipitated Lead Titanate‐Epoxy 0–3 Piezoelectric Composites
Author(s) -
Lee MoonHo,
Halliyal Arvind,
Newnham Robert E.
Publication year - 1989
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1989.tb06256.x
Subject(s) - poling , materials science , composite material , crystallite , piezoelectricity , lead titanate , dielectric , epoxy , saturation (graph theory) , diffraction , ferroelectricity , optics , optoelectronics , physics , mathematics , combinatorics , metallurgy
The 0–3 piezoelectric composites were prepared using a dielectric gel with 70 vol% of coprecipitated PbTiO 3 powders with sizes of 12 to 1100 nm. Composites were cured at 80°C for 10 h and poled with E = 0 to 100 kV /cm for 0 to 15 min at 85°C. X‐ray diffraction patterns taken on the surface of the composites before and after poling indicated that saturation poling was nearly achieved at 80 kV /cm. d̄ 33 was strongly dependent upon the particle size. Composites of fine PbTiO 3 powders, smaller than 200 nm, needed a much longer poling time to saturate than large particles probably because of the rotation of the single‐domain crystallites during poling.