Physical properties of La1−xPbxMnO3 perovskites with 0.24 ≤ x ≤ 0.40

► The temperature dependence of lattice parameters has been studied. ► The number of Mn4+ ion are the same as Pb2+ ions, as obtained from paramagnetic and XPS studies. ► The temperature dependences of magnetoresistivities and spin polarizations have been analysed.