Title :
Solid state grain growth of piezoelectric single crystals
Author :
Kwon, Seongtae ; Hackenberger, Wesley S. ; Rehrig, Paul W. ; Lee, J.-B. ; Heo, T.-M. ; Kim, D.H. ; Lee, H.-Y.
Author_Institution :
TRS Ceramics, State College, PA, USA
Abstract :
The recent results related to development of the solid state crystal growth process, specially focusing on PMN-PT are presented. The processing parameters such as sintering atmosphere and growth temperature of crystal are discussed. The feasibility of using SSCG for the growth of high Tc piezoelectric materials such as BiScO3-PbTiO3 will be also presented. The heteroepitaxial nucleation and growth, are examined in 36BiScO3-64PbTiO3 ceramics using SrTiO3 and BaTiO3 as template materials. The amount of excess PbO is correlated with the growth distance when BaTiO3 single crystals are used as templates. More than 100 μm of growth was observed at 1150°C after 16 hr heat treatment for this system. When tabular SrTiO3 particles are used as template materials, elongated grains ∼10 times larger than matrix grains were observed.
Keywords :
barium compounds; bismuth compounds; ferroelectric ceramics; grain growth; grain size; heat treatment; lead compounds; nucleation; piezoceramics; relaxor ferroelectrics; sintering; solid phase epitaxial growth; strontium compounds; 1150 degC; 16 hr; BaTiO3; BiScO3-PbTiO3; PMN-PT; PMN-PbTiO3; PbMgO3NbO3-PbTiO3; SrTiO3; ceramics; elongated grains; growth distance; growth temperature; heteroepitaxial nucleation; matrix grains; piezoelectric materials; piezoelectric single crystals; processing parameters; sintering atmosphere; solid state grain growth; tabular particles; template materials; Capacitive sensors; Ceramics; Costs; Crystal microstructure; Crystalline materials; Crystallization; Educational institutions; Ferroelectric materials; Solid state circuits; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 2004. ISAF-04. 2004 14th IEEE International Symposium on
Print_ISBN :
0-7803-8410-5
DOI :
10.1109/ISAF.2004.1418359
