%0 Journal Article %T Effect of Different Calcination Process and Gd2O3 as Impurities on the Different Phases of Bi-Based Superconductor %A Ahmad Amirabadizadeh %A Sara Memarzadeh %A Tajabor, Nasser %A Arabi, Hadi %J World Journal of Condensed Matter Physics %@ 2160-6919 %D 2012