Patent ID: 8545982

Claim:
A hexagonal type barium titanate powder, wherein a maximum particle diameter is 1.0 μm or less, a ratio (D90/D50) of 90% accumulated particle diameter (D90) and 50% accumulated particle diameter (D50) is 3.0 or less, a hexagonal ratio is 50% or more, an average particle diameter is 0.1 to 0.5 μm, the powder is shown by Ba A (Ti 1-α M α ) B O 3 , wherein M is a trivalent metal ion having an effective ionic radius in the range from 0.58 to 0.64 Å, a ratio A/B is in the range from 0.900 to 1,040, and α is in the range from 0.03 to 0.2, and M is a trivalent metal ion selected from the group consisting of Cr, Ga and Co.