Abstract
Needle-shaped (Pb1-xBax)1-yLa2y/3Nb2O6 powders are prepared in the presence of molten slat, and one directional grain-oriented ceramics are made from these powders by two-stage hot-pressing technique. The morphology of powder and the dielectric and piezoelectric properties of ceramics are also examined. The obtained grain-oriented ceramics have a large anisotropy in both permittivity and coupling factor depending on the first and second hot-pressing directions. The substitution of Ba or La has remarkable effect not only on morphology of the powder but on electrical properties of the ceramics.
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