Abstract
High quality 95Na 1/2Bi 1/2TiO 3–5BaTiO 3 (NBT–5BT) single crystals of 10 mm×10 mm×3 mm in size were fabricated by the solid state single crystal growth technique involving the sintering of proportioned powder compacts in contact with a seed. Structural studies with X-ray diffraction and Raman spectroscopy revealed that the as-grown single crystals have a rhombohedral (pseudo-cubic) single phase. The (0 0 1) cubic -oriented single crystals showed excellent dielectric and piezoelectric properties: ε r =723 , tan δ=0.01 (1 kHz at 25 °C), d 33=207 pC/N, and k 33=0.5. These values are comparable to the best reported properties of melt-grown single crystals.
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