Synthesis and characterization of core–shell Ni/NiO nanoparticles/CuTl-1223 superconductor composites
Source abstract
Abstract
Abstract Core-shell nickel/nickel-oxide (Ni/NiO) nanoparticles/Cu 0.5 Tl 0.5 Ba 2 Ca 2 Cu 3 O 10− δ (CuTl-1223) superconductor composites were synthesized by solid-state reaction. The effect of these nanoparticles inclusion on structural and superconducting properties of CuTl-1223 matrix was investigated. Structural, morphological, and compositional properties were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) spectroscopy respectively. Superconducting transport properties were explored by dc-resistivity ( ρ ) measurements and the different oxygen vibrational modes of the composites were observed by Fourier transforms infrared (FTIR) spectroscopy. The variation of critical temperature ( T c ) depends upon the nanoparticles contents in the host superconducting matrix. The overall suppression of T c with increasing nanoparticles concentration is most probably due to trapping of mobile free carriers and pair-breaking caused by the reflection/scattering of carriers across these nanoparticles having net magnetic moment of metallic nickel in the core of nanoparticles.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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