Journal of Crystal Growth, Vol.459, 23-30, 2017
Preparation of directionally solidified BaTi2O5-Ba(6)Ti(17)O40 eutectic by the floating zone method
The BaTi2O5 Ba6Ti17O40 eutectic (BaO-68.7 mol% TiO2) was directionally solidified by the floating zone (FZ) method and crystalline phases, microstructures and orientation were investigated. Ba6Ti17O40 with faceted rodlike shape was dispersed in the BaTi2O5 matrix. The growth directions of BaTi2O5 and Ba6Ti17O40 were parallel to the b and a axis, respectively, and the orientation relations were BaTi2O5 (010)//Ba6Ti17O40 (602) and BaTi2O5 (001)/Ba6Ti17O40 (001).
Keywords:Directional solidification;Eutectics;Floating zone technique;Oxides;Ferroelectric materials