Mani Kongnine, D.Hamrita, A.Napo, K.2020-11-052020-11-052017-05-01Articale in Journal of fundamental and Applied Sciences Vol. 09, N. 021112-9867http://dspace.univ-eloued.dz/handle/123456789/7426Articale in Journal of fundamental and Applied Sciences Vol. 09, N. 02Samples with the addition of ferromagnetic nanoparticles of Pr2Co7 on YBa2Cu3Oy (YBCO) polycrystalline superconductor were prepared by the standard solid state reaction method. The analysis of x-ray diffraction patterns by Rietveld refinement indicates orthorhombique to tetragonal phase transformation and oxygen rate reduction from x=0.3% of Pr2Co7 content. Resistivity at room temperature increases as Pr2Co7 content increases. The normal state resistivity versus temperature was analyzed properly by the bipolaron model. It suggested the increase of mobile charge localization with Pr2Co7 content.frPr2Co7 ferromagnetic nanoparticles, high temperature superconductor, bipolaron model, localization of mobile charge.Article