用固相反应法制备了钙钛矿锰氧化物La_(0.8)MnO_(3+δ),通过测量直接烧结样品和氧气退火样品的M-T曲线和ρ-T曲线,研究了镧空位对样品磁电性质的影响.结果发现,两个样品在110K附件样品发生顺磁到铁磁转变,但该相变在ρ-T曲线上并没出现.对于退火样品,电阻率大小比直接烧结样品下降一个量级,而且在ρ-T曲线205K和245K处出现两个电阻峰,而且高温处的峰位置受磁场的影响较大,可能是因为退火后氧含量的增加导致的. The La_ (0.8) MnO_ (3 + δ) perovskite manganese oxide was prepared by solid-state reaction. The MT curve and ρ-T curve of direct sintered samples and oxygen annealed samples were measured. The results show that paramagnetic to ferromagnetic transitions occur in the samples of 110K attachment for the two samples, but the phase transition does not appear on the ρ-T curve.For the annealed samples, the resistivity decreases by a factor of one over the direct sintered sample And two resistance peaks appear at the ρ-T curves 205K and 245K, and the location of the peak at high temperature is greatly affected by the magnetic field, possibly due to the increase of oxygen content after annealing.