Ferroelectric ceramic material
AssigneeCanon Kabushiki Kaisha
InventorsZuyi Zhang, Jumpei Hayashi, Kenji Takashima, Tatsuo Furuta
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Abstract
Provided is a ferroelectric ceramic material containing BaTiO3 as a main component which can control a Curie temperature in a wide range, has no phase transition in the vicinity of a room temperature, and exhibits excellent ferroelectric characteristics. The ferroelectric ceramic material includes an oxide represented by the formula: (100−a−b)BaTiO3.aBi2O3.bM2O3, where M represents a trivalent metal other than Bi, and a and b satisfy 1≦a≦15, 0≦b≦5, and 5≦a+3b≦15 and M is preferably a trivalent metal selected from fifth period transition metals or rare earth metals having an atomic number of 59 or higher to 69 or lower.
Claims10
A ferroelectric ceramic material comprising an oxide represented by the following formula:
- (100−a−b)BaTiO3.aBi2O3.bM2O3
- where M represents a trivalent metal other than Bi, and a and b satisfy 1≦a≦15, 0.5≦b≦2.4, and 5≦a+3b≦15.
Dependencies are inferred from the claim text.