| Abstract: | By using a sol-gel clue, a set of polycrystalline perovskite samplesLa$_{1 - x}$Ag$_{x}$MnO$_{3}$ with a nominal doping level $x$ rangingfrom 0.05 to 0.45 has been synthesized. The chemical composition andthe magnetism of the samples were investigated. A little Ag was foundseeping from the samples in the sintering process when the dopinglevel exceeded 0.05 and the sintering temperature was higher than700du, resulting in the samples being in multiphase. The magnetictransition points of the samples have been found to decrease withincreasing sintering temperature. A concentration-dependent $T_{rmc}$ similar to that of bivalent metal ion doped perovskite, has beenobtained. We believe that the Ag seeping in the sintering process isresponsible for those magnetic characteristics. |
