TECHNIQUES FOR TOP-SEEDED SOLUTION GROWTH OF BATIO3

Barium titanate, BaTiO3, has applications in optical information proce ssing by using its excellent photorefractive properties. Growth of BaT iO3 by the top-seeded solution growth technique is unusually difficult compared to the growth of other crystals. Single-crystal quality is v ery sensitive to temperature changes. We discuss techniques for the so lution growth of BaTiO3. We apply continuous weight determination to h elp understand and control the growth process. Single-crystal 100 gram boules have been grown and are within similar to 10% of the weight pr edicted from the phase diagram.