Rb-substitued Pr1-xRbxMnO3（0.05≤x≤0.08） reaction. Powder X-ray diffraction showed that the space group of Pnma. Spin glass behaviors was successfully synthesized by solid state all the compounds were orthorhombic with were observed for all the compounds at low temperature, suggesting the competition between ferromagnetic and antiferromagnetic. The temperature dependence of the resistivity for the compound Pr0.92Rb0.0sMnO3.02 at 0 and 2 T magnetic field was also investigated. The compound shows semiconducting behavior, and the band gap is 0.3 eV. The maximum magnetoresistance is about 30% at 2 T magnetic field near 116 K.
