Title :
Dielectric and electromechanical properties of <001>-textured (0.68)Pb(Mg1/3Nb2/3)O3-(0.32)PbTiO 3
Author :
Sabolsky, E.M. ; Kwon, S. ; Suvaci, E. ; James, A.R. ; Messing, G.L. ; Trolier-McKinstry, S.
Author_Institution :
Dept. of Mater. Sci. & Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Reactive templated grain growth (RTGG) was used to obtain [001] fiber-textured (1-x)Pb(Mg1/3Nb2/3)O3-(x)PbTiO3 (x=0.3-0.35). The RTGG process involved the use of <001>-oriented BaTiO3 and SrTiO3 template particles in a fine grained precursor PMN-32PT matrix during tape casting. A high degree of texture coupled with high density was observed in the samples prepared from a matrix composed of uncalcined PMN-32PT precursor. Unipolar strain measurements on textured ceramics indicated considerably higher strain levels (~0.25-0.3%) and d33 values (~1000-1400 pC/N) than untextured samples. Well saturated hysteresis loops associated with a Pr of 27 μC/cm2 were obtained on these samples
Keywords :
dielectric hysteresis; dielectric losses; ferroelectric ceramics; grain growth; lead compounds; permittivity; powder technology; texture; PMN-PbTiO3; PbMgO3NbO3-PbTiO3; [001] fiber-textured; dielectric properties; electromechanical properties; fine grained precursor PMN-32PT matrix; loss tangent; permittivity; piezoelectric properties; reactive templated grain growth; saturated hysteresis loops; tape casting; template particles; textured ceramics; unipolar strain; Capacitive sensors; Ceramics; Crystal microstructure; Crystallography; Dielectric losses; Ferroelectric materials; Niobium; Powders; Slurries; Strain measurement;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.941579
