| 摘要 |
The present invention provides a perovskite titanium-containing composite oxide fine particle represented by the formula: (A1XA2 (1-X)) YTi03±delta (wherein 0<= X<= 1, 0. 98<= Y<= l. 02, 0<= delta<= 0.05, Al and A2 each is an atom selected from a group consisting of Ca, Sr, Ba, Pb and Mg and are different from each other), wherein the specific surface area is from 1 to 100 m 2/g and the D2/Dl value is from 1 to 10. |
