顶部籽晶法生长SrTiO3晶体及SrO-TiO2体系中的phase diagram研究
Top-seeded solution growth of SrTiO3 crystals and phase diagram studies in the SrO-TiO2 system
摘要：
重新测定了（1-x）SrO + xTiO_2相图中的富TiO_2部分，发现SrTiO_3和TiO_2之间的共晶点为x_eut=0.7700+/-0.0001; T_eut=（1449+/-3）deg C。从TiO 2丰富的熔体溶液，x=0.75厘米大小的单晶体可以生长。对于生长方向和，获得了蚀坑密度<2 x 10^4/cm ^2的最佳晶体<110><100>。界面的AFM研究揭示了逐层生长。
英文摘要：
The TiO2 rich part of the (1-x) SrO + x TiO2 phase diagram 0.5 <= x <= 1.0 was redetermined and the eutectic point between SrTiO3 and TiO2 was found at x_eut=0.7700+/-0.0001; T_eut=(1449+/-3) deg C. From TiO2 rich melt solutions, x=0.75 centimeter-sized single crystals could be grown. The best crystals with etch pit density <2 x 10^4/cm^2 were obtained for growth directions <110> and <100>. AFM investigation of the interface reveals layer-by-layer growth.
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