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Effect of Ce substitution on structural and superconducting properties of Bi-2212 system

AutorKaya, C.; Özçelik, B.; Özkurt, B.; Sotelo, A.; Madre, M. A.
Fecha de publicación2013
EditorSpringer
CitaciónJournal of Materials Science: Materials in Electronics 24(5): 1580-1586 (2013)
ResumenIn this study, Bi2Sr2Ca1-xCe xCu2Oy, where x = 0, 0.01, 0.05, 0.1 and 0.25, superconducting samples were prepared by solid state method and subsequently used as feed in a laser induced directional solidification (LFZ) process. The physical properties of the samples were investigated by powder X-ray diffraction, scanning electron microscopy, dc-electrical resistance, magnetization, and magnetic-hysteresis loops measurements. It has been found that no significant difference has been observed in the critical transition temperatures of samples except for the sample with the highest Ce additions, which shows the lowest TC compared with the other doped samples. Magnetic hysteresis measurements have shown that the hysteresis loop is greater than the doped samples. In addition, critical current density values obtained from the hysteresis loops measurements by using Bean's critical state model show a decrease with Ce-addition. All the results indicate that Cerium substitution for Ca produces the deterioration on the superconducting properties, compared with the undoped sample.
Versión del editorhttp://dx.doi.org/10.1007/s10854-012-0979-z
URIhttp://hdl.handle.net/10261/117545
DOI10.1007/s10854-012-0979-z
ISSN0957-4522
E-ISSN1573-482X
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