Relationship Between Annealing Time and Magnetic Properties in Bi-2212 Textured Composites
Küçük Resim Yok
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, we report the physical and magnetic properties of Bi2Sr2CaCu2O (x) textured materials prepared by a LFZ melting technique and annealed for different times (60, 72, 96 and 120 h). SEM images of the annealed samples for 96 and 120 hours indicate very good alignment with the longitudinal rod axis. In all cases, X-ray diffraction patterns show that the Bi-2212 phase is the major one. The magnetization measurements have been carried out as a function of the magnetic field up to 9 kOe. J (c) values of the samples were calculated by using the Bean model. The results indicate that the different annealing time has no significant effects on the T (c) values but, significant change on the critical current values of samples, J (c), has been obtained for sample annealed at 96 hours. We also found that the maximum critical density of J (c) is 5.5x10(5) A/cm(2) at 10 K for the 96 hours annealed sample.
Açıklama
3rd International Conference on Superconductivity and Magnetism (ICSM) -- APR 29-MAY 04, 2012 -- Istanbul, TURKEY
Anahtar Kelimeler
Bi-2212, LFZ technique, Magnetic properties, Critical current density (J(c))
Kaynak
Journal of Superconductivity and Novel Magnetism
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
26
Sayı
4
