Impact of functionalized SiC nano-whisker on the flux pinning ability and superconductor features of Bi-2223 ceramics

Fallah-Arani, Hesam; Baghshahi, Saeid; Sedghi, Arman

doi:10.1016/j.ceramint.2020.09.226

Cited by 21 publications

(3 citation statements)

References 39 publications

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“…Cooper oxides or cuprates are second category of superconducting materials [42]. The cuprates demonstrates commendable features like stronger magnetic field presentation, nil energy failure and current bearing ability [43]. BSCCO (BiSrCaCuO) system is one of the wonderful compound that have get the intentions of scientists because of astonishing characteristics to carry the electric current with zero resistance.…”

Section: Figure 5 [14]: Structure Of Copper Oxides (Cuprates)mentioning

confidence: 99%

Properties and Types of Superconductors

Hasan

2022

Superconductors

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The disappearing of electrical resistance below the critical temperature (Tc) is known as superconductivity discovered by Kamerlingh Onnes in 1911. Superconductors are consisted of two categories namely type I and type II also called soft and hard superconductors, respectively. Type I superconductors obey the Meissner effect while type II superconductors do not. The superconducting compounds are divided into three categories, (i) Metal based systems, (ii) Copper oxides (cuprates) and (iii) Iron based superconductors (IBSC). Metal-based superconductors are combination of cubic crystal configuration named the A15 structure. Initial IBSC was revealed in 2006 for LaFePO; nevertheless, Tc stayed as small as ~4 K. High-Tc compounds were then expressed for LaFeAsO1–xFx by means of Tc = 26 K in 2008. Superconductors have considerable positions in the lower temperature magnet applications such as MRI, nuclear magnetic resonance and superconducting quantum interference.

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Section: Figure 5 [14]: Structure Of Copper Oxides (Cuprates)mentioning

confidence: 99%

Properties and Types of Superconductors

Hasan

2022

Superconductors

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“…Recently, numerous reports have been published on the effects of the different nanosized additives on the superconducting properties of the (Bi, Pb)-2223 superconducting phase [2,[46][47][48][49][50][51][52][53][54]. The impacts of ZnO nanoparticles (NPs) on the uctuation induced conductivity and pseudogap properties of the (Bi, Pb)-2223 phase was investigated in our previous study [11].…”

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confidence: 99%

Thermally activated flux flow and inter-granular coupling properties in (Bi, Pb)-2223 superconductor added with ZnO nanoparticles

Aftabi

Mozaffari

2022

Preprint

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In high-temperature ceramic superconductors, vortices motion is caused by the strong thermal fluctuations due to the thermally activated flux flow (TAFF). The TAFF impedes the transport properties and critical current density of superconductors. It has been reported that the addition of nanoscale impurities can create artificial pining centers that may improve flux pinning capability and inter-granular coupling in ceramic superconductors. Here, the effects of different amounts (0.0 to 1.0 wt%) of ZnO nanoparticles on the TAFF behavior and zero temperature activation energy of the Bi1.6Pb0.4Sr2Ca2Cu3O10+δ superconducting phase have been studied using the modified TAFF model. Moreover, the impacts of the additive on the inter-granular traits and the Josephson coupling energy of the superconducting phase have been investigated using AC susceptibility measurements. Results indicate that the vortex phases for all composites are divided into three vortex regions, but the temperature ranges in each region are different for various amounts of the additives. A vortex glass to vortex liquid transition at Tg was obtained from the analysis. The vortex liquid region is divided into the critical and TAFF ones. It was found that the TAFF region is shifted to the higher temperatures and gets narrower by adding the ZnO nanoparticles up to 0.2 wt%. The Tg increases from 93.8 K for the ZnO free sample to 101.0 K for the sample with 0.2 wt% ZnO nanoparticles. In addition, the zero temperature activation energy (U0/KB) increases from ~ 0.4×105 K for the ZnO free sample to ~ 1.4×105 K for the sample with 0.2 wt% ZnO nanoparticles and then decreases for higher values of additive. Moreover, it was found that the Josephson coupling energy Ej increases from ~ 0.037 eV for ZnO free sample to ~ 0.130 eV for the sample with 0.2 wt% additives. These results point out the significant improvement of the flux pinning capability and inter-granular coupling of the Bi1.6Pb0.4Sr2Ca2Cu3O10+δ superconducting phase with the addition of the 0.2 wt% ZnO nanoparticles.

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“…When the impurities' size is larger than the coherence length and smaller than the penetration depth, they lead to intensive interactions between vortex lines and nanoscale impurities and consequently enhanced the flux pining capability [11,37,55]. The effects of the various nanoscale impurities on the flux pinning and critical parameters of the Bi1.6Pb0.4Sr2Ca2Cu3O10+δ (BiPb-2223) have been investigated recently [25,35,49,[56][57][58][59][60][61][62][63][64][65]. In the present study, the effects of Al2O3-15 wt% ZrO2 (AlZr) nanocomposite on the microscopic parameters (coherence length, penetration depth, Fermi energy, and Fermi velocity of charge carriers) and superconducting parameters (critical current density and critical magnetic fields) of the BiPb-2223 superconductor phase has been investigated using excess conductivity analyses.…”

Section: Introductionmentioning

confidence: 99%

Excess conductivity analysis of BiPb-2223 superconductor added with (Al2O3–15wt% ZrO2) nanopowders

Aftabi

Mozaffari

Moghadam

2023

Preprint

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Weak flux pinning and weak intergranular coupling are the main constraints of the Bi1.6Pb0.4Sr2Ca2Cu3O10+δ (BiPb-2223) superconductor that restrict its practical applications. It has been shown that introducing artificial pinning centers could enhance flux pinning capability in high-temperature superconductors. In this work, the excess conductivity analyses used to study the effects of Al2O3–15 wt% ZrO2 (AlZr) nanocomposite on the superconducting properties of the BiPb-2223 phase. A series of (BiPb-2223)1−x/(AlZr)x composite samples (0.0 wt% ≤ x ≤ 1 wt%) were synthesized. The XRD results and SEM micrographs showed that adding AlZr nanocomposite up to 0.5 wt% improves the Bi1.6Pb0.4Sr2Ca2Cu3O10+δ phase formation and intergranular coupling. The excess conductivity analyses showed that the Fermi energy EF, Fermi velocity VF, and coherence length along the c axis ξc(0) decrease with increasing the amount of the AlZr nanocomposite. the ξc(0) value decreases from 3.68 Å for AlZr free sample to 2.70 Å for x = 1.0 wt%. Moreover, different superconducting critical parameters, including lower and upper critical magnetic fields (Bc1(0) and Bc2(0)), and critical current density (Jc(0)) are estimated by the Ginsberg-Landau theory. Obtained values indicated a remarkable enhancement in the mentioned critical parameters by adding the AlZr nanocomposite. The Jc(0) value enhances from 1.4×103 A/cm2 for AlZr free sample to 3.5×103 A/cm2 for the sample with 1.0 wt% additives, which shows that the Jc(0) is improved by about 150%. The obtained values also show that the critical magnetic fields are improved by about 80% by adding the 1.0 wt% AlZr nanocomposite. The improvement of the superconducting parameters most likely attributes to the the flux pinning capability and intergranular coupling enhancment.

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Impact of functionalized SiC nano-whisker on the flux pinning ability and superconductor features of Bi-2223 ceramics

Cited by 21 publications

References 39 publications

Properties and Types of Superconductors

Properties and Types of Superconductors

Thermally activated flux flow and inter-granular coupling properties in (Bi, Pb)-2223 superconductor added with ZnO nanoparticles

Excess conductivity analysis of BiPb-2223 superconductor added with (Al2O3–15wt% ZrO2) nanopowders

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