| 摘要 |
PROBLEM TO BE SOLVED: To provide barium sulfate having excellent performance in UV screening, lubrication, adhesion, soft focus etc., developed by investigating functions of barium sulfate doped with a specific amount of a rare earth element.SOLUTION: The rare earth doped barium sulfate is barium sulfate doped with a specific amount of a rare earth element, and is represented by the general formula (BaM)SO, where M is a metal element and 0.5≤X<1. |
