High currents in MCP BSCCO 2212 bulk material

Elschner, S.; Böck, J.; Brommer, G; Herrmann, P.F.

doi:10.1109/20.511437

Cited by 28 publications

(10 citation statements)

References 5 publications

(3 reference statements)

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“…For instance, Bi-2212/Ag thick films have successfully been prepared by partial melt processing [1]. Melt casting has proven to be a powerful route for preparing Bi-2212 tube-shaped samples [2].…”

Section: N Order To Develop Technological Applications Based Onmentioning

confidence: 99%

Laser textured Bi-2212 in planar geometries

Mora

Díez

López-Gascón

et al. 2003

IEEE Trans. Appl. Supercond.

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A laser assisted zone melting process has been used to texture large Bi-2212 planar polycrystalline samples with approximate dimensions 100 mm 10 mm 1 mm. This technique opens the possibility of producing large bulk textured samples attractive for power devices. The effect of growth parameters on the microstructure has been studied by scanning electronic microscopy and EDX microanalysis. The microstructure that results from the solidification profile has been correlated with the transport properties at temperatures around 77 K. In order to deduce the dissipation mechanism that limits the transport critical current in these planar samples, the temperature dependence of the critical current for these samples has been compared with that exhibited for the well-developed laser floating zone Bi-2212 rods.

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Section: N Order To Develop Technological Applications Based Onmentioning

confidence: 99%

Laser textured Bi-2212 in planar geometries

Mora

Díez

López-Gascón

et al. 2003

IEEE Trans. Appl. Supercond.

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“…Besides chemical doping, the production techniques have also been widely studied by researchers to produce high quality and homogeneous samples. Among these preparation techniques, some of them can be underlined, as the classical solid state [27,28] melt quench [29][30][31], sol-gel [32][33][34][35] and the polymer matrix [36][37][38] methods.…”

Section: Introductionmentioning

confidence: 99%

Improvement of superconducting properties in Na-doped BSCCO superconductor

Özçelık

Gürsul

Sotelo

et al. 2014

J Mater Sci: Mater Electron

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In this study, the effect of Na substitution on the structural, electrical and magnetic properties of Bi 2 Sr 2 Ca 1-x Na x Cu 2 O 8+y superconductor with x=0.0, 0.05, 0.075, 0.1, 0.15, and 0.2 has been investigated. The effects of partial replacement of Na for Ca have been investigated by electrical resistivity (ρ-T), scanning electron microscopy (SEM), X-ray diffraction (XRD), and magnetic characterizations. XRD results have shown that the Bi-(2212) phase is the major one independently of the Na-concentration. SEM results indicate that the microstructure of samples is improved with increasing of Na-contents. From the electrical resistivity measurements it has been found that Tc is slightly higher than 92 K for Na-concentrations up to 0.20. Moreover, this trend is maintained in the magnetic measurements where the hysteresis loops are increased with increasing Na-concentrations. The maximum calculated Jc, using Bean's model, is around 10*10 6 A/cm 2 at 10 K and ∼ 1000 Oe for the 0.075 Na doped samples.

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“…In fact, the self flux density , especially for HTS bulks, can reduce the critical current density. So its effect should be considered when studying the electrical contact characteristics of YBCO bulk [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analyses of Electrical Contact Characteristics of YBCO Bulk With Silver Deposition

Jian

Rong

et al. 2007

IEEE Trans. Appl. Supercond.

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In this paper, an axial symmetric model is constructed to investigate the electrical contact characteristics of YBCO bulk with silver deposited on the contact surface. In order to calculate the thermal-electromagnetic coupling characteristics near the contact spot, a series expression is derived to describe the quenching behavior of YBCO bulk based on the power law and Kim model and a detailed thermal-electromagnetic coupling process is presented according to the physical quenching process of YBCO bulk. During the calculation, the thermal field, the electrical field, and the self-magnetic field are coupled with each other. The calculated contact resistances are compared with the experimental ones. Agreements between them verify the effectiveness of the axial symmetric model. At last, a detailed description about the contact resistance changing from the low-impedance state to the high-impedance state is given based on the calculated field distributions. This work could be helpful to further understanding the electrical contact characteristics of YBCO bulk.

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High currents in MCP BSCCO 2212 bulk material

Cited by 28 publications

References 5 publications

Laser textured Bi-2212 in planar geometries

Laser textured Bi-2212 in planar geometries

Improvement of superconducting properties in Na-doped BSCCO superconductor

Numerical Analyses of Electrical Contact Characteristics of YBCO Bulk With Silver Deposition

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