skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Critical Current Density and AC Susceptibility of Bi{sub 1.6}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} Superconductor with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} Nanomaterial

Journal Article · · Journal of Superconductivity and Novel Magnetism

The juxtaposition of superconductivity and magnetism is an interesting research topic due to the exclusivity nature of both phenomena. In this paper, we report the effect of nanosized (~ 5 nm) nickel zinc ferrite Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} (NZFO) on Bi{sub 1.6}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} (Bi-2223) superconductor. Bi-2223 powders were prepared using the co-precipitation method. Samples with starting formula Bi{sub 1.6}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}(Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}){sub x} for x = 0 to 0.1 wt% have been prepared. The structure, microstructure, electrical resistance, and AC susceptibility were determined. The transport critical current density, J{sub ct}, was measured using the 1 μV/cm criterion. The non-added sample sintered for 48 h showed the highest zero resistance temperature, T{sub c-zero} (105 K) and J{sub ct} of 1.83 A cm{sup −2} at 40 K. The x = 0.02 wt% sample sintered for 48 h (T{sub c-zero} = 103 K) showed the highest J{sub ct} of 5.30 A cm{sup −2} at 40 K. The peak temperature of the imaginary part of the complex susceptibility, T{sub p}, increased with sintering time and nanoparticle addition, indicating full flux penetration occurred at higher temperatures and improved intergrain coupling. NZFO nanoparticle did not suppress the transition temperature but it improved the transport critical current density by more than five times indicating it enhanced flux pinning and connectivity between grains in the Bi-2223 phase.

OSTI ID:
22919593
Journal Information:
Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 2; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
Country of Publication:
United States
Language:
English