Crystallization activation energy and hole concentration properties of the Bi2Sr2Ca1-xCdxCu2O8+y glass-ceramic superconductor rods
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Kluwer Academic/Plenum Publ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The glass rods with the nominal compositions of Bi2Sr2Ca1-xCdxCu2O8+y, where x = 0.0, 0.4, and 0.8, were prepared by melt-casting method. XRD studies exhibited that the Cd substitution caused a transition from Bi-2212 phase to Bi-2201 phase. The multiphase structure was obtained for higher Cd concentration cases. It was determined that the activation energy for crystallization was decreased with the increase of the Cd concentration. When the Cd concentration was increased in the system the superconducting properties decreased. The hole concentration, p, was calculated using the Presland's method. The increase in the Cd concentration increased the hole concentration and the results showed that the Cd-substituted samples were highly in the overdoped region.
Açıklama
Anahtar Kelimeler
glass-ceramic BSCCO system, crystallization activation energy, hole concentration
Kaynak
Journal of Superconductivity
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
15
Sayı
6
