Floating-Zone BaTiO3: Preparation and Properties

Single-crystal boules, 2.5 cm long by 0.32 cm diameter, of ferroelectric BaTiO3 containing 1.5% SrTiO3 have been grown by a floating-zone process. Since the use of a crucible to contain the molten material is avoided high inherent purity is achieved. In addition boule shape permits studies not feasible with the earlier butterfly wing crystals of Remeika. Several of the ferroelectric and structural properties have been measured and are similar to those well known for crystals grown by other methods. X-ray rocking curves possessing double peaks have been observed, an effect which is ascribed to ferroelectric domains.