Top-seeded solution growth of SrTiO3 crystals and phase diagram studies in the SrO–TiO2 system
Abstract
The TiO2 rich part of the (1 − x)SrO + xTiO2 phase diagram (0.5 ≤ x ≤ 1.0) was redetermined and the eutectic point between SrTiO3 and TiO2 was found at xeut = 0.7700 ± 0.0001; Teut = 1449 ± 3 °C. From TiO2 rich melt solutions, x = 0.75, centimeter-sized single crystals could be grown. The best crystals with an etch pit density of <2 × 104 cm−2 were obtained for growth directions 〈110〉 and 〈100〉. AFM investigation of the interface reveals layer-by-layer growth.