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US 10,519,066 B2Granted
Dielectric porcelain composition, method for producing dielectric porcelain composition, and multilayer ceramic electronic component
AssigneeMurata Manufacturing Co., Ltd.
InventorSatoshi Yokomizo
Life of this patent
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Abstract
A dielectric porcelain composition having a main component of a lead-free perovskite type compound at least containing Ba, Ca, Ti, and Sb, and having a Curie temperature Tc of 140° C. or higher.
Claims17
A dielectric porcelain composition comprising a lead-free perovskite compound having a main component at least containing Ba, Ca, Ti, and Sb, the dielectric porcelain composition having a Curie temperature Tc of 140° C. or higher, and wherein the Sb is in the form of a solid solution at an A site of the lead-free perovskite compound.
A method for producing a dielectric porcelain composition, the method comprising:
- preparing a main component powder from a ceramic raw material at least including a Ba compound, a Ca compound, a Ti compound, and an Sb compound;
- a shaping the main component powder into a ceramic shaped body;
- and
- firing the ceramic shaped body in a reducing atmosphere to produce a ceramic sintered compact having a Curie temperature Tc of 140° C. or higher,
- wherein Sb is in the form of a solid solution at an A site of a lead-free perovskite compound of the ceramic sintered compact.
2 more elements
Dependencies are inferred from the claim text.