By using the sol-gel method, a set of polycrystalline perovskite samples La_1-xAg_xMnO₃ with a nominal dope level x ranging from 0.05 to 0.45 were synthesized. The process of phase formation of the samples was investigated. The samples were found in multiphase when the dope level exceeded 0.05 and the sintering temperature was lower than 1200ºC. The magnetism versus the dope level has been researched. The magnetic transition points of the samples have been observed to decrease with increasing the sintering temperature. And a concentration-dependent T_c similar with that of bivalent metal ion doped perovskite has been obtained. Ag seeping in the sintering process is responsible for those magnetism characteristics.

 

PACS Numbers: 75.50.Dd; 75.50.Tt; 81.07.-b; 61.10.Nz,