MgB2 inclusions in Bi-2223 matrix: The evaluation of microstructural, mechanical and superconducting properties of new system, Bi-2223+MgB2

Doğruer, M.; Yıldırım, G.; Varılcı, A.; Terzioğlu, C.

doi:10.1016/j.jallcom.2012.12.117

Cited by 21 publications

(2 citation statements)

References 59 publications

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“…Table 3 shows that ΔT(T c −T cJ ) for SGN 790 is lower than the other samples. These results suggest that this sample has better inter-granular coupling between the grains [37]. Clem assumed that for high T c of superconductors consisting of grains, the coupling of the grains occurs through the Josephson currents in the layers between grains.…”

Section: Ac Susceptibilitymentioning

confidence: 73%

Effect of using two different starting materials (nitrates and carbonates) and a calcination processes on the grain boundary properties of a BSCCO superconductor

Shamsodini

Salamati

Shakeripour

et al. 2019

Supercond. Sci. Technol.

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The influence of using two different starting materials (nitrates and carbonates) and calcination processes on the grain boundary properties of a BSCCO system have been investigated. Superconducting BSCCO samples with the chemical composition Bi1.64Pb0.34Sr2Ca2Cu3Oy were successfully fabricated by the sol–gel method. X-ray diffraction (XRD) and scanning electron microscopy analyses have been used to study the phase formation and microstructure of the prepared samples, respectively. The DC electrical resistivity, critical current density, and AC susceptibility of the samples were measured. The XRD result showed that one can improve the phase formation of the Bi-2223 system by choosing suitable starting materials and the temperature of calcination. AC susceptibility and DC electrical resistivity revealed that the synthesis process improves the grain boundaries. The critical current density (measured in 77 K) increased from 100 A cm−2 to about 145 A cm−2. In fact, the critical current of the sample fabricated with a carbonates group and calcinated at 750 °C obtained 100 A cm−2, while a sample that was fabricated with a nitrates group and calcinated at 790 °C had the critical current of 145 A cm−2.

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Section: Ac Susceptibilitymentioning

confidence: 73%

Effect of using two different starting materials (nitrates and carbonates) and a calcination processes on the grain boundary properties of a BSCCO superconductor

Shamsodini

Salamati

Shakeripour

et al. 2019

Supercond. Sci. Technol.

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show abstract

“…A number of techniques were applied for fabrication of practical MgB2 conductors during last 17 years. The chemical doping [8][9][10] , substitution [11,12] , evaporation [13,14] and changing preparation condition [15][16][17] have extensively been used to improve the mechanical, microstructural, superconducting and magnetic properties of the MgB2 material.…”

Section: Introductionmentioning

confidence: 99%

Nanoscience and Nanotechnology

Chattopadhyay¹,

Ghosh²

2018

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Aim: In the present study, I have investigated the effect of different annealing time durations of 0.5h, 1h, 2h and 4h (annealing temperature at 700 o C) on the electrical, micro structural and superconducting properties of the nano hexagonal boron nitride (hBN) added/doping magnesium diboride (MgB2) superconducting samples. The aim of this work, hBN added MgB2 superconducting bulk samples are determined to find out the optimum sintering time, also investigated how BN addition effects the optimum fabrication conditions. These superconducting samples were prepared by the conventional solid-state reaction method. Experimental techniques of X-ray diffraction (XRD) were used for structural and microstructural examinations. Critical transition temperatures, difference between Tc-onset and Tc-offset, a and c lattice parameter, grain size, bulk density, residual resistivity ratios (RR) and cross-sectional area fractions (AF) of the pure and nano-hBN added MgB2 materials are obtained using a cryostat equipped with a superconducting magnet. All the experimental results notice that the characteristic features improve regularly with the increment in sintering time durations.

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Sn diffusion coefficient and activation energy determined by way of XRD measurement and evaluation of micromechanical properties of Sn diffused YBa2Cu3O7−x superconducting ceramics

Görür

Ozturk

Doğruer

et al. 2013

J Mater Sci: Mater Electron

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MgB2 inclusions in Bi-2223 matrix: The evaluation of microstructural, mechanical and superconducting properties of new system, Bi-2223+MgB2

Cited by 21 publications

References 59 publications

Effect of using two different starting materials (nitrates and carbonates) and a calcination processes on the grain boundary properties of a BSCCO superconductor

Effect of using two different starting materials (nitrates and carbonates) and a calcination processes on the grain boundary properties of a BSCCO superconductor

Nanoscience and Nanotechnology

Sn diffusion coefficient and activation energy determined by way of XRD measurement and evaluation of micromechanical properties of Sn diffused YBa2Cu3O7−x superconducting ceramics

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