| Authors | Amir Zelati, Ahmad Amirabadizadeh, Ahmad Kompany, Hadi Salamati, Jeff Sonier |
|---|---|
| Journal | Indian Journal of Science and Technology |
| Page number | 123-134 |
| Serial number | 2 |
| Volume number | 7 |
| IF | 1.747 |
| Paper Type | Full Paper |
| Published At | 2014-02-01 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | India |
Abstract
To study the effects of Dy2 O3 nanoparticle addition to BSCCO superconducting system, four bulk polycrystalline samples with general formula of Bi1.6Pb0.4Sr2 Ca2 Cu3 Oy + xDy2 O3 (where, x = 0.0, 0.5, 1.0, 2.0 wt%) were prepared by chemical sol-gel method. Dy2 O3 nanoparticles were added to the BSCCO system in order to improve the connectivity among the grains leading to increase in the critical current density (Jc ). X-ray diffraction, SEM, TEM and Energy Dispersive X-ray spectroscopy (EDX) were used for structural characterization of the samples. XRD analysis showed that both (Bi,Pb)-2223 and Bi-2212 phases coexist in the samples having orthorhombic crystal structure. DC electrical resistivity and AC magnetic susceptibility were measured. DC electrical resistivity and AC magnetic susceptibility measurements showed improvements in ∆Tc (Tc, onset‒Tc. R = 0), hole concentration, intergrain connectivity and Jc in BSCCO superconducting system by adding 0.5 wt% Dy2 O3 nanoparticles to it. While for x > 1, DC and AC measurements did not present satisfactory results.