Effect of Compaction Pressure on Structural and Superconducting Properties of Bi-2223 Superconductors

Kocabaş, Kemal; Gökçe, Melis; Çiftçioğlu, Muhsin; Bilgili, Özlem

doi:10.1007/s10948-009-0590-6

Cited by 19 publications

(7 citation statements)

References 23 publications

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“…This means that increasing Au addition concentration to 1.25 wt% does not hinder the grains growth; on the contrary it increases the formation of randomly bigger platelet grains on the surface. Flower like grains were also observed, which may enhance the connectivity among the grains and they can increase the pinning centers to fix the vortices [34]. SEM results corroborate well with XRD results.…”

Section: Resultssupporting

confidence: 82%

Improvement of superconducting parameters of Bi1.6Pb0.4Sr 2Ca 2Cu 3O10+ δ added with Au nanoparticles

Jassim¹

2018

IJP

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Samples of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ superconductor were prepared by solid-state reaction method to study the effects of gold nanoparticles addition to the superconducting system, Nano-Au was introduced by small weight percentages (0.25, 0.50, 0.75, 1.0, and 1.25 weight %). Phase identification and microstructuralcharacterization of the samples were investigated using XRD and SEM. Moreover, DC electrical resistivity as a function of the temperature, critical current density Jc, AC magnetic susceptibility, and DC magnetization measurements were carried to evaluate the relative performance of samples. x-ray diffraction 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 Tc (onset) and zero electrical resistivity critical temperatures Tc (R=0) of the samples were determined from the DC electrical resistivity measurements. An improvement of the superconducting transition temperature of 6.36 % was obtained with increasing Au nanoparticles to x = 1.25 wt.%, while the critical current density is improved by 220 %. AC magnetic susceptibility measurement showed that the diamagnetic fraction and intergranular coupling of the x = 1.25 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.

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Section: Resultssupporting

confidence: 82%

Improvement of superconducting parameters of Bi1.6Pb0.4Sr 2Ca 2Cu 3O10+ δ added with Au nanoparticles

Jassim¹

2018

IJP

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“…On the other hand, the relatively low T C value obtained from the samples sintered for 120 h was attributed to decomposition of the 2223 phase to the 2201 phase. These values are comparable to those reported for BSCCO superconductors [27][28][29][30][31][32].…”

Section: Characterization Of the Calcined Powdersupporting

confidence: 89%

Synthesis and Characterization of Bi1.6Pb0.4Sr2Ca2Cu3O7 Superconducting Oxide by High-Energy Milling

Darsono

Imaduddin

Raju

et al. 2015

J Supercond Nov Magn

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Superconducting Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 7 was prepared by a solid-state reaction using high-energy milling for the starting materials. The effects of the sintering temperature and time on the phase evolution, microstructure, and superconducting properties were examined by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and four-point probe resistivity measurements. High-energy milling decreased the precursor particle size to approximately 30 nm with a relatively uniform distribution of multi-compositions. Because of the mechanochemical activation for the starting materials, the reaction temperature was decreased to 750 • C due to the decreased diffusion length required for the solid-state reaction. Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 7 prepared by high-energy milling showed good superconducting properties with T c ∼ 100 K, which is superior to the same material prepared by ball milling and sol-gel routes.

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“…This means that increasing Y 2 O 3 addition concentration to 1.0 wt% does not hinder the grain growth; on the contrary, it increases the formation of randomly bigger platelet grains on the surface. Flower-shaped grains were also observed, which may enhance the connectivity among the grains, and they can increase the pinning centers to fix the vortices [34]. SEM results corroborate well with XRD results.…”

Section: X-ray Diffraction and Microstructure Studiessupporting

confidence: 81%

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

Oboudi

2016

J Supercond Nov Magn

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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.

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Effect of Compaction Pressure on Structural and Superconducting Properties of Bi-2223 Superconductors

Cited by 19 publications

References 23 publications

Improvement of superconducting parameters of Bi1.6Pb0.4Sr 2Ca 2Cu 3O10+ δ added with Au nanoparticles

Improvement of superconducting parameters of Bi1.6Pb0.4Sr 2Ca 2Cu 3O10+ δ added with Au nanoparticles

Synthesis and Characterization of Bi1.6Pb0.4Sr2Ca2Cu3O7 Superconducting Oxide by High-Energy Milling

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

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