TY - JOUR
T1 - High strain, 〈001〉 textured 0.675Pb(Mg 1/3Nb 2/3)O 3-0.325PbTiO 3 ceramics
T2 - Templated grain growth and piezoelectric properties
AU - Kwon, Seongtae
AU - Sabolsky, Edward M.
AU - Messing, Gary L.
AU - Trolier-McKinstry, Susan
PY - 2005
Y1 - 2005
N2 - Lead magnesium niobate-lead titanate, 0.675Pb(Mg 1/3Nb 2/3)O 3-0.325PbTiO 3 (PMN-32.5PT) ceramics were textured (grainoriented) in the 〈100〉-crystallographic direction by the templated grain growth process. The textured PMN-32.5PT ceramics were produced by orienting {001}-SrTiO 3 (ST) platelets (∼10 μm in diameter and ∼2-μm thickness) in a submicron PMN-32.5PT matrix. The templated growth of 〈 001〉-oriented PMN-32.5PT grains on the ST platelets resulted in textured ceramics with ∼70% Lotgering factor and >98% theoretical density. Unlike most lead-based ceramics, excess PbO was not needed for sintering or grain growth. Based on unipolar stain-field measurements at 0.2 Hz, the textured samples displayed >0.3% strain at 50 kV/cm. Low-field d 33-coefficients of >1600 pC/N (<5 kV/cm) were measured directly from unipolar measurements. The low drive field d 33-piezoelectric coefficient of the highly textured samples is two times greater than polycrystalline PMN-32.5PT.
AB - Lead magnesium niobate-lead titanate, 0.675Pb(Mg 1/3Nb 2/3)O 3-0.325PbTiO 3 (PMN-32.5PT) ceramics were textured (grainoriented) in the 〈100〉-crystallographic direction by the templated grain growth process. The textured PMN-32.5PT ceramics were produced by orienting {001}-SrTiO 3 (ST) platelets (∼10 μm in diameter and ∼2-μm thickness) in a submicron PMN-32.5PT matrix. The templated growth of 〈 001〉-oriented PMN-32.5PT grains on the ST platelets resulted in textured ceramics with ∼70% Lotgering factor and >98% theoretical density. Unlike most lead-based ceramics, excess PbO was not needed for sintering or grain growth. Based on unipolar stain-field measurements at 0.2 Hz, the textured samples displayed >0.3% strain at 50 kV/cm. Low-field d 33-coefficients of >1600 pC/N (<5 kV/cm) were measured directly from unipolar measurements. The low drive field d 33-piezoelectric coefficient of the highly textured samples is two times greater than polycrystalline PMN-32.5PT.
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U2 - 10.1111/j.1551-2916.2005.00057.x
DO - 10.1111/j.1551-2916.2005.00057.x
M3 - Article
AN - SCOPUS:29744457023
SN - 0002-7820
VL - 88
SP - 312
EP - 317
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 2
ER -