To provide a BaTi2O5 single crystal exhibiting an extremely high dielectric constant, and to provide its manufacturing method.
The dielectric material exhibiting the high dielectric constant is a plate-like piece of the BaTi2O5 single crystal. The surface parallel to the electrode surface is (010)-plane of the crystal. The dielectric material is manufactured by mixing powdery raw materials so that the atomic concentration ratio of Ti to Ba is in a range of 1.8 to 2.2, then sintering the resulting mixture into a solidified body, preparing the BaTi2O5 single crystal by melting and solidifying the solidified body with a solidification speed of 5-50 mm/h by a floating zone melting method, and cutting out cut pieces from the crystal so that the surface parallel to the (010)-plane of the crystal becomes the electrode surface.
AKASHI TAKAYA
HASHIZUME RYOKICHI
GOTO TAKASHI
AKASHI TAKAYA
Michio Mori