Synthesis and Magnetic Properties of Bi1.7Pb0.3Sr2Ca2Cu3O10+δ Added with Nano Y

Abstract

Bi 17 Pb 0.3 Sr 2 Ca 2 Cu 3 O 10+δ superconductor samples were synthesized by the conventional solid-state reaction method. To study the effects of the addition of yttrium nanoparticles to the superconducting system, nano Y 2 O 3 was introduced by small weight percentages (0.2, 0.4, 0.6, 0.8, and 1.0 wt%) in the first step of the synthesis process. Phase identification and microstructural characterization of the samples were investigated using X-ray diffraction and scanning electronic microscopy (SEM). Energydispersive X-ray spectroscopy (EDX) analysis was utilized to confirm the presence of the desired elements in the chemical composition of the samples. Moreover, DC electrical resistivity as a function of the temperature, critical current density (J c ), AC magnetic susceptibility, and DC magnetization measurements were carried to evaluate the relative performance of samples. XRD analysis showed that both (Bi,Pb)-2223 and Bi-2212 phases coexist in the samples having an orthorhombic crystal structure. Both the onset critical temperatures (T c ) (onset) and zero electrical resistivity critical temperatures (T c ) (R = 0) of the samples were determined from the DC electrical resistivity measurements. An improvement of the superconducting transition temperature of 3.0 % was obtained with increasing Y 2 O 3 nanoparticles to x = 1.0 wt%, while the critical current density is improved by 200 %. AC magnetic susceptibility measurement showed that the diamagnetic fraction and intergranular coupling of the x = 1.0 wt% sample are greater than those of the others. The variation of magnetization with temperature (M-T curve) of the samples was measured by cooling the sample in zero fields (ZFC) and an applied field of 10 Oe (FC). The results of AC magnetic susceptibility and DC magnetization measurements were in good agreement with DC electrical resistivity measurement.

Investigation of the Magnetic and Mechanical Properties of Nano-Y2O3 Doped Bismuth Based Superconductor Materials

“…Accordingly, the orthorhombic structure continues to exist in all samples. In Table 1, it is seen that there is no change the volume fraction of the 2223-phase in nano-Y2O3 addition samples compared to the undoped sample [14]. The nano-Y2O3 addition has been effectively added to the phase stability of the BSCCO systems.…”

“…It was found that critical temperature and critical current density increased up to x=0.7 wt%. Again, in a study conducted by Oboudi in 2016 [14], nano Y2O3 was added to Bi1,8Pb0,4Sr2Ca2Cu3O10+y superconductor samples with different weight percentages. As the additive ratio increased, the current density increased by 200% and superconductivity transition temperature increased by 3%.…”

Superconducting and Mechanical Properties of the Tl0.8Hg0.2Ba2Ca2Cu3O9−δ Superconductor Phase Substituted by Lanthanum and Samarium Fluorides

“…J c clearly followed the same pattern as T c with x. J c rises from roughly 614 A/cm 2 for the pure sample to 691 A/cm 2 and 1034 A/cm 2 for x = 0.025 of Sm and la, respectively, as shown in Figures 6 and 7. This improvement might be attributed to Sm and La replacements functioning as pinning centers to stabilize vortices and improve inter-grain and intergranular flux pinning [39,40]. However, La has a bigger influence on the flux pinning and critical current density of the prepared samples than Sm.…”

Determination of Solubility Characteristic of (Bi, Gd) Substitution in Bi-2223 Inorganic Materials

“…Generally, the major of the studies done so as to augment the superconducting characteristics of BSCCO is the addition or substitution process of the elements to the matrix. Recently, nanoparticle addition or substitution processes to Bi-2223 phase is condensed day by day with the help of the developing technology [20][21][22][23][24][25][26][27][28][29][30]. Additionally, introduction of nanoparticles in the high temperature superconducting systems has attracted significant attention due to the fact that these particles are thought as simply controlled and productive instrument to develop superconducting characteristics.…”