Structural and magneto-electrical properties of bi(2-x)sm(x)sr(2)cacu(2)o(8+delta)high t(c)superconductor prepared by pechini method
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Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Polycrystalline superconducting samples of Bi(2-x)Sm(x)Sr(2)CaCu(2)O(8+delta)were synthesized using Pechini method with different doping Sm concentrations (x = 0.0, 0.05, and 0.10) and investigated. FTIR spectroscopy showed that our final samples are totally free of organic elements. Le Bail refinement revealed that they were crystallized in the Bi-2212 phase. A small amount of the omnipresent Bi-2201 phase appeared as an impurity phase in all samples, whereas a small amount of Bi-2223 appeared only in the case ofx = 0.5. In one hand, the Sm doping decreases the cell parameters, and in other hand, it leads to a transformation into a pseudo-tetragonal structure in the case ofx = 0.10.The modulation was found to be incommensurate and increases with Sm content. The magneto-electrical resistivity curves show a transition to the superconductor state. The critical temperature T(C)decreases with the Sm doping, whereas the activation energy U(0)increased from 53.4 meV to 68.9 meV.
Açıklama
Anahtar Kelimeler
High T(c)superconductors, Samarium Doping, Magneto-resistivity, Pechini Method
Kaynak
Journal Of Superconductivity And Novel Magnetism
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
33
Sayı
11
