| 摘要 |
A perovskite titanium-containing composite oxide particle has a composition represented by general formula (I), wherein the specific surface area is about 10 to about 200 m2/g, the specific surface area diameter D1 of the primary particles as defined by formula (II) is about 10 to about 100 nm, and the ratio D2/D1 of the average particle size D2 of the secondary particles to D1 is about 1 to about 10:<paragraph lvl="0"><in-line-formula>M(TiO3) (I)</in-line-formula>(wherein M is at least one of Ca, Sr, Ba, Pb, or Mg)<paragraph lvl="0"><in-line-formula>D1=6/rhoS (II)</in-line-formula>(wherein rho is the density of the particles, and S is the specific surface area of the particles.) The perovskite titanium-containing composite oxide particle of the present invention shows a small particle size and excellent dispersion properties, so that the particle is suitable for the application to functional materials such as a dielectric material and a piezoelectric material, a memory, and a photocatalyst. |
