Enhancement in the performance of BSCCO (Bi-2223) superconductor with functionalized TiO2 nanorod additive
Source abstract
Abstract
Abstract Using a sol-gel route, we produced (Bi,Pb) 2 Sr 2 Ca 2 Cu 3 O 10+θ (Bi-2223) specimens with the addition of titanium dioxide nanorods (TiO 2 -NR) additive, with the aim of understanding the role of one-dimensional (1D) additives on the magnetic properties, flux pinning ability and microstructure of Bi-2223. TiO 2 -NR was hydrothermally prepared through the two-step process. The Isocyanatopropyltrimethoxysilane (IPTMS) was employed as a surface modifier of TiO 2 -NR. Based on FTIR spectra, successful connection between the surface of TiO 2 -NR with IPTMS was approved. XRD patterns revealed that the structure of Bi-2223 as the main phase was maintained with the increase of TiO 2 -NR. An enhancement in the vortex pinning and superconducting properties was obtained in the specimen with the 0.2 wt%. TiO 2 -NR. The microstructure of the samples showed enough contact between the plate-shape BSCCO grains. By increase of TiO 2 -NR content, grain connectivity and grain alignment slightly diminished. Among the samples, the one containing 0.2 TiO 2 -NR showed the largest magnetic hysteresis curves and the highest critical current density (J c ) equal to 2.01 × 10 6 A/cm 2 , comparable to the considerable results reported for Bi-2223. The possible flux pinning mechanisms predominant in this compound were evaluated, indicating that TiO 2 -NR improved the pinning performance in Bi-2223.
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 · Superconductivity in MgB2 and Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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