Electrical, Structural, and Thermal Properties of Ferrite/Superconductor (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}){sub x}/YBa{sub 2}Cu{sub 3}O{sub 7-δ}) Nanocomposite Materials

Journal Article · Thu Aug 15 00:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4984-1· OSTI ID:22922948

Dawoud, M. A.T.; Shams, M. S.; Elbehiry, Eslam ^[1]

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1. Menoufia University, Physics and Mathematical Engineering Department, Faculty of Electronic Engineering (Egypt)

The superconductor YBa{sub 2}Cu{sub 3}O{sub 7-δ} (Y123) is prepared by the solid-state route, while the nanosized Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} (Ni-Zn ferrite) is synthesized via citric acid sol-gel technique. The composite material of the type (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}){sub x}/YBa{sub 2}Cu{sub 3}O{sub 7-δ}, where x = 0.00, 0.03, 0.10, and 0.50 wt%, is prepared by a modified solid-state method to study the effect of doping Ni-Zn nanosized ferrite on the superconducting, structure, and thermal properties of Y123. The prepared samples show Meissner effect which confirmed the presence of superconducting phase at liquid nitrogen temperature (77 K). The prepared samples have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersion of X-ray (EDX), infra-red (IR) spectroscopy, thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), DC resistance by four-probe, and critical current density measurements. It was found that by increasing Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanoparticles in the Y123 compound, the unit cell volume of the orthorhombic phase decreases, but the transition temperature T{sub c} and critical current density J{sub c} decrease for low doping (x = 0.03 wt%) then increase (x = 0.10 and 0.50 wt%) for Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} doped in Y123. The transport properties of the (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}){sub x}/YBa{sub 2}Cu{sub 3}O{sub 7}-{sub δ} composite as electrical resistance R, T{sub c}, and J{sub c} are interpreted according to Bean’s critical state model and charge-vortex interaction combined with vortex pinning in Y123 high-T{sub c} mixed-state type-II superconductor. Highlights: The critical current density J{sub c} decreased for low doping of nanosized Ni-Zn ferrite into Y123 with ratio of 0.03 wt% and increased by increasing doping ratio to 0.50 wt%. The physical properties are improved by the coexistence of the superconductor Y123 and nanosized Ni-Zn ferrites in nanocomposite material.

• OSTI ID: 22922948
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 8; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BARIUM COMPOUNDS
CRITICAL CURRENT
CUPRATES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
FERRITES
HIGH-TC SUPERCONDUCTORS
MIXED STATES
NANOCOMPOSITES
NANOPARTICLES
NANOSTRUCTURES
NICKEL COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION TEMPERATURE
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
ZINC COMPOUNDS