Method for Single Crystal Growth of Barium Titanate and Barium Titanate Solid Solution

摘要

The present invention relates to a single crystal growth method of the barium titanate (BaTiO ₃₎ and barium titanate solid solution _{((Ba x M 1-x} ) (Ti y N 1-y) O 3). Barium titanate and a single crystal growth method of the barium titanate solid solution according to the present invention, how the single crystal growth of the barium titanate and a barium titanate solid solution with the abnormal grain growth phenomena of the primary and secondary thus eseona above a certain temperature or the like the composition and the heat treatment atmosphere of the crystal in, by sintering the barium titanate powder in a reducing atmosphere is the abnormal grain growth is inhibited barium preparing the crystals (a); The method comprising the manufacture of the crystals and bonding the seed (seed) single crystal (b); And it is the temperature, composition and the atmosphere adjustment so that abnormal grain growth sheets up from the junction with the seed crystals of the single crystal, the seed single crystal is characterized in that it comprises a step (c) to continue growing into the crystals. According to the present invention, since a special device it can be produced barium titanate and a single crystal of barium titanate solid solution with only common heat treatment process without the need to have the advantage of being economically mass-produce a single crystal. Barium titanate and a single crystal growth method of the barium titanate solid solution according to the present invention may be applied to other systems it takes place sheets of abnormal grain growth.