加圧型静電浮遊炉で作製した酸素欠損六方晶BaTi03 単結晶における巨大誘電応答
2007 年 24 巻 2 号 p. 148-
詳細
2007 年 24 巻 2 号 p. 148-
Oxygen-deficient hexagonal BaTiO3 single crystals were grown by a pressurized electrostatic levitation furnace. The hexagonal BaTiO3 exhibited a giant dielectric constant (ε’) at room temperature and a weak temperature dependence of ε’ in the range from 70 K to 300 K. Annealing the hexagonal BaTiO3 in air atmosphere in order to control the amount of the oxygen deficiencies improved the dielectric properties. These results suggest that the oxygen-deficient hexagonal BaTiO3 is expected as a candidate for technological application.
