Superconducting and Transport Properties of (Bi-Pb)-Sr-Ca-Cu-O with Nano-Cr2O3 Additions

Kong, Weiqiang; Abd‐Shukor, R.

doi:10.1007/s11664-007-0287-1

Cited by 41 publications

(4 citation statements)

References 14 publications

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“…However, Jc is found to decrease as Eu substitute increase. This similar trend is discussed by [10] where the existence of Bi-2212 phase in undoped and Eu-doped samples suppressed the current carrying capability due to the problem of weak link. On the other hand, research by Nayera et al [11] conclude that the decrease in Jc may be attributed to the formation of a liquid phase that acts as an insulating layers around the superconductor grains thus decrease the grain connectivity.…”

Section: X-raysupporting

confidence: 77%

Synthesis and Characterization of Low Density Bi-2223 Cuprates Superconductor Doped Eu2O3 Nanoparticles

Suhaimi

Hashim

Kasim

et al. 2021

SSP

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Bi1.6Pb0.4Sr2Ca2-xEuxCu3Oδ cuprates superconductor doped with Eu nanoparticles (x = 0.0000, 0.0025, 0.0200 and 0.0500) were synthesized through conventional solid state reaction method. Crystalline sucrose was added during pelletization and burn at 400°C for two hours to create low density sample. The effect of doping Eu2O3 nanoparticles on the structural and superconducting properties by means of critical temperature (Tc), critical current density (Jc), X-ray diffraction (XRD) together with Field Emission Scanning Electron Microscopy (FESEM) and Alternating Current Susceptibility (ACS) were studied. Based on XRD analyses, the crystallographic structure has shown slightly changed from tetragonal to orthorhombic. The amount of 2223 phase gradually decreased with the increment of Eu concentration which indicates that Eu nanoparticles substitution favours the growth of 2212 phases. The resistivity measurements show that the highest Tcvalue for doped samples found at 90 K for x = 0.0025. The FESEM images showed that the plate-like grains become smaller and distributed randomly without specific alignment due to the increment of Eu concentration.

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Section: X-raysupporting

confidence: 77%

Synthesis and Characterization of Low Density Bi-2223 Cuprates Superconductor Doped Eu2O3 Nanoparticles

Suhaimi

Hashim

Kasim

et al. 2021

SSP

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“…When 0.03 % was doped the maximum volume fractions were observed while with the doping of 0.01 % the utmost critical current density was obtained at critical temperature of 102 K [118]. The microstructure, the current density and flux pinning properties of HTSC Bi-2223 systems demonstrated the variable trends by the addition of ZrO2 [119], SiC [120], MgO [121], Fe2O3 [122], MgB2 [123], Nb2O5 [124], Cr2O3 and FeS [125] nanoparticles. The addition of doping elements and controlling of grain size may decrease the flux pinning in high temperature superconductors Bi-2223.…”

Section: Properties Of Superconductorsmentioning

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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“…In recent studies, the incorporation of nanoparticles into BPSCCO has been investigated as a means to improve Jc and enhance flux pinning capabilities. Various types of nanoparticles, including Al2O3, Cr2O3, Fe3O4, and TiO2 nanoparticles, have been employed for this purpose [10][11][12][13]. Semiconducting nanoparticles have also gained significant attention due to their favorable properties, including high stability, ease of manufacturing, and low toxicity [14,15].…”

Section: Introductionmentioning

confidence: 99%

Distinctive Effects between Hydrothermal and Ultrasound Synthesized SnO2 Nanoparticles on Ceramic Bi1.6Pb0.4Sr2Ca2Cu3O10+δ Superconductor

Pham,

Anh,

Thien

et al. 2024

MaP

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The effect of additions of two series of SnO2 nanoparticles synthesized using two different methods on crystal structure and superconductivity of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ (BPSCCO) superconductors was investigated. Two series of spherical SnO2 nanoparticles were synthesized independently by using ultra-sonication (US-SnO2) and hydrothermal (HT-SnO2) methods. Polycrystalline samples of (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1−x(SnO2)x, where x ranged between 0, 0.002 and 0.004, were fabricated by the solid-state reaction method. X-ray diffraction patterns showed a decrease in the volume fraction of the Bi-2223 and an increase in that of the Bi-2212 phases. Scanning electron microscopy images presented the “needle-like blossom” on the surface of the US-SnO2 doped samples, while the phenomenon was not found on the HT-SnO2 doped samples. The Tc was decreased extremely with US-SnO2 doping while slightly HT-SnO2 nanoparticle-doped samples. The field dependence of Jc, Jc(B), showed the opposite tendencies on two series of samples: Jc(B) was enhanced on the HT-SnO2 nanoparticle-doped samples, and that was decreased on UT-SnO2 nanoparticle-doped samples. The application of the Dew-Hughes model to explore the flux pinning mechanism exhibited that the point-like pinning centers were dominant on the HT-SnO2 doped samples. On US-SnO2 doped samples, however, the additional pinning center type was not found and could be explained by the observed over-sized SnO2 nano-needle.

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Superconducting and Transport Properties of (Bi-Pb)-Sr-Ca-Cu-O with Nano-Cr2O3 Additions

Cited by 41 publications

References 14 publications

Synthesis and Characterization of Low Density Bi-2223 Cuprates Superconductor Doped Eu<sub>2</sub>O<sub>3</sub> Nanoparticles

Synthesis and Characterization of Low Density Bi-2223 Cuprates Superconductor Doped Eu<sub>2</sub>O<sub>3</sub> Nanoparticles

Properties and Types of Superconductors

Distinctive Effects between Hydrothermal and Ultrasound Synthesized SnO2 Nanoparticles on Ceramic Bi1.6Pb0.4Sr2Ca2Cu3O10+δ Superconductor

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