In this paper, the laser floating zone (LFZ) technique has been used to fabricate Bi2Sr2Ca1Cu2-x Fe (x) O (x=0,0.01,0.03,0.05,0.1) superconducting fibers. The effects of Fe substitution on grain alignment and superconducting properties of annealed fibers were studied using SEM/EDX microanalysis in addition to phase analysis and magnetic measurements realized through XRD, M-T, and M-H loops. In the same growth conditions, higher Fe contents lead to a more compact microstructure with lower porosity but also caused the formation of poor superconducting phases followed by the decrease of T (c) and J (cmag). No evidence of enhanced pinning capability was found in the magnetic measurements. Annealed rods indicated a weakly ferromagnetic-like behavior at relatively high doping levels.
C1 [Ozabaci, M.; Yakinci, M. E.] Inonu Univ, Bilimsel & Teknol Arastirma Merkezi IBTAM, SEM EDX Lab, TR-44280 Malatya, Turkey.
[Sotelo, A.; Madre, M. A.] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon ICMA, Zaragoza 50018, Spain.
[Yakinci, M. E.] Inonu Univ, Fen Edebiyat Fak, Fiz Bolumu, TR-44280 Malatya, Turkey.