TY - JOUR
T1 - Dielectric and electromechanical properties of barium titanate single crystals grown by templated grain growth
AU - Ruhrig, Paul W.
AU - Trolier-McKinstry, Susan
AU - Park, Semig Eek
AU - Meaaing, Gary L.
N1 - Funding Information:
Manuscript received May 17, 1999; accepted June 15, 1999. Financial support from the Defense Advanced R esearch Projects Agency on AFSOR Grant No. F49620-94-1-0428 is gratefully acknowledged.
PY - 2000/7
Y1 - 2000/7
N2 - Single crystals of BaTiO3 were grown by templatcd grain growth (TGG). TGG involves contacting a single crystal "template" to a sintered polycrystalline matrix, then heating the assemblage to a temperature that promotes the migration of the single crystal boundary through the matrix. In this investigation the properties of millimetor-sized, plate-ahaped and bar-shaped, single crystals of BaTiOu grown by TGG were examined in order to compare the results to single crystals grown by conventional methods. A dielectric constant, , of 260, polarizations of PLI ∼ 16 μC/cm2 and Psat ∼ 21.5 μC/cm2, electromechanical coupling coefficients of kaa ∼ 0.51 and fcni ∼ 0.1.8, and a piezoelectric coefficient of das ∼ 140 pC/N wore achieved. Kntrappccl porosity in the crystals made fully poling the crystals difficult.
AB - Single crystals of BaTiO3 were grown by templatcd grain growth (TGG). TGG involves contacting a single crystal "template" to a sintered polycrystalline matrix, then heating the assemblage to a temperature that promotes the migration of the single crystal boundary through the matrix. In this investigation the properties of millimetor-sized, plate-ahaped and bar-shaped, single crystals of BaTiOu grown by TGG were examined in order to compare the results to single crystals grown by conventional methods. A dielectric constant, , of 260, polarizations of PLI ∼ 16 μC/cm2 and Psat ∼ 21.5 μC/cm2, electromechanical coupling coefficients of kaa ∼ 0.51 and fcni ∼ 0.1.8, and a piezoelectric coefficient of das ∼ 140 pC/N wore achieved. Kntrappccl porosity in the crystals made fully poling the crystals difficult.
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U2 - 10.1109/58.852072
DO - 10.1109/58.852072
M3 - Article
C2 - 18238623
AN - SCOPUS:0034226980
SN - 0885-3010
VL - 47
SP - 895
EP - 902
JO - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
JF - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
IS - 4
ER -