Investigation of the structural and electrical properties of CdO/(Bi, Pb)−2212 superconducting phase

Basma, H.; Abbas, Sara; labban, Wafic; Awad, R.; Matar, M.

doi:10.1088/1402-4896/ac68aa

Cited by 10 publications

(1 citation statement)

References 83 publications

(94 reference statements)

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“…As for the variation of the superconducting transition temperature T c , dc-electrical resistivity measurements were conducted using the four probe method and are reported elsewhere [57][58][59]. The results are depicted in the graph of Fig.…”

Section: Theoretical Approachmentioning

confidence: 99%

Thermal and Mechanical Investigations of (Bi, Pb)-2212 Superconductor Added with Different Oxide Nanoparticles

Matar,

Basma,

Abbas

et al. 2024

Materials Performance and Characterization

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In this study, superconducting samples of type Bi 1.6 Pb 0.4 Sr 1.9 Ca 1.1 Cu 2.1 O y ,(Bi, Pb))-2212, added with CdO, CdMnO, and CdFeO nanoparticles, were synthesized using a solid state reaction technique. The samples were examined using X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). Thermogravimetric analysis (TGA) was utilized to evaluate the thermal stability of the pure sample throughout the different stages of the phase formation and the effect of the nanoparticles addition. The weight loss/gain by the three additions is related to the excess of oxygen, con rmed via Iodometric titration analysis and from the ndings of oxygen diffusion energy using TGA data. Vickers microhardness measurements were conducted at various applied loads (0.49-9.8 N). All of the prepared samples displayed a typical 'indentation size effect' (ISE) behavior based on the H V measurements. It was found that the optimum addition of nanoparticles, for increasing the microhardness of the (Bi, Pb)-2212 phase, was at x = 0.05 wt. %. Furthermore, various mechanical properties as Elastic modulus (E), yield strength (Y), fracture toughness(K), and brittleness index (B) were calculated for three additions of the samples studied. As for the theoretical examination of H V in the saturation limit regions, the indentationinduced cracking (IIC) model wins the comparison.

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Section: Theoretical Approachmentioning

confidence: 99%

Thermal and Mechanical Investigations of (Bi, Pb)-2212 Superconductor Added with Different Oxide Nanoparticles

Matar,

Basma,

Abbas

et al. 2024

Materials Performance and Characterization

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Structural, electrical and mechanical properties of the (NdFeO3)x/(CuTl)-1223 superconductor phase

et al. 2023

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Effect of hard magnetic ferrite (Ba0.5Sr0.5Fe12O19) nanoparticles on the mechanical properties of the (Bi, Pb)-2223 phase

et al. 2023

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To manifest the effect of hard magnetic Ba0.5Sr0.5Fe12O19 nanoparticles on the mechanical performance of the (Bi,Pb)-2223 superconducting phase, nano-(Ba0.5Sr0.5Fe12O19)x/Bi1.8Pb0.4Sr2Ca2Cu3.2O10+δ, with x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05, 0.10, and 0.20 wt%, were synthesized using a conventional solid-state reaction method. The X-ray diffraction (XRD) data revealed that adding nano-(Ba0.5Sr0.5Fe12O19) to the host (Bi,Pb)-2223 phase preserved the orthorhombic structure. The porosity (P%) calculations revealed a decrease until x = 0.04 wt%, which suggests that the addition of nano-(Ba0.5Sr0.5Fe12O19)x reduces the number of voids and improves inter-grain connections, as confirmed by SEM micrographs. The superconducting transition temperature (Tc) increased to 112 K with the inclusion of nano-(Ba0.5Sr0.5Fe12O19) up to x = 0.04 wt%. Vickers microhardness (HV) measurements were conducted at various applied loads (0.245–9.800 N) and a duration time of 45 s. The HV number increased with the addition of x up to x = 0.04 wt% but then decreased with further addition. Various models were employed for analysis and modelling of Vickers hardness (HV) versus test load (F), including Meyer’s law, Hays–Kendall (H–K) model, the elastic/plastic deformation (EPD) model, the proportional sample resistance (PSR) model, the modified proportional sample resistance (MPSR), and indentation-induced cracking (IIC) model. It was found that the PSR model was the most appropriate theoretical model for describing the microhardness of nano-(Ba0.5Sr0.5Fe12O19)x/(Bi,Pb)-2223 composites. Moreover, the elastic modulus (E), yield strength (Y), fracture toughness (K), brittleness index (B), and elastic stiffness coefficient (C11) were estimated as a function of the inclusion of nano-(Ba0.5Sr0.5Fe12O19)x. Furthermore, the indentation creep test (time-dependent Vickers microhardness) revealed that the dislocation creep mechanism exists in composite samples with low concentrations (x < 0.05 wt%), whereas the dislocation climbs creep mechanism was observed for x ≥ 0.05 wt%.

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Investigation of the structural and electrical properties of CdO/(Bi, Pb)−2212 superconducting phase

Cited by 10 publications

References 83 publications

Thermal and Mechanical Investigations of (Bi, Pb)-2212 Superconductor Added with Different Oxide Nanoparticles

Thermal and Mechanical Investigations of (Bi, Pb)-2212 Superconductor Added with Different Oxide Nanoparticles

Structural, electrical and mechanical properties of the (NdFeO3)x/(CuTl)-1223 superconductor phase

Effect of hard magnetic ferrite (Ba0.5Sr0.5Fe12O19) nanoparticles on the mechanical properties of the (Bi, Pb)-2223 phase

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