Fabrication of cuprate superconducting La1.85Sr0.15CuO4 nanofibers by electrospinning and subsequent calcination in oxygen

Li, Jianmin; Zeng, Xian; Mo, Ai-Di; Xu, Zhu-An

doi:10.1039/c1ce06032e

Cited by 34 publications

(27 citation statements)

References 22 publications

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“…A more promising approach for the batch fabrication of superconducting nanowires may be given by using the electrospinning method , where no template is involved and nanowires of longer lengths can be grown. This was recently presented in the literature for YBa 2 Cu 3 O 7 , (La,Sr)CuO 4 and Bi 2 Sr 2 CaCu 2 O 8 nanowires.…”

Section: Resultssupporting

confidence: 58%

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires

Koblischka

Zeng

Hartmann

2015

Phys. Status Solidi A

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Nanowires of high-T c superconductors of the RE-123 type (RE ¼ rare earths) were grown by the anodized alumina template method, employing commercially available alumina templates with nominal pore diameters of 20 and 100 nm. Pre-reacted YBa 2 Cu 3 O x (YBCO) and NdBa 2 Cu 3 O x (NdBCO) powder was molten on top of the templates in order to fill the pores with the 123-type material. The resulting samples were oxygen-annealed at 450 8C. Superconductivity with a transition temperature of 88 K (YBCO) and 96 K (NdBCO) was confirmed by means of magnetic susceptibility measurements (SQUID) using pieces of the filled template. The electric (resistance) and magnetic measurements revealed further relatively sharp superconducting transitions. To understand the dimensions of the resulting nanowires (length up to 10 mm, diameter between 100 and 250 nm), which do not correspond to the nominal pore diameters, the empty and filled commercial templates were analyzed in detail by scanning electron microscopy. We discuss the feasibility of this approach to produce larger amounts of nanowires.

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Section: Resultssupporting

confidence: 58%

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires

Koblischka

Zeng

Hartmann

2015

Phys. Status Solidi A

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“…Details of the nanowire fabrication procedure are given elsewhere. 8,9 The constituent phases of the samples were determined by means of a high-resolution automated RINT2200 X-ray powder diffractometer, using Cu-K α radiation generated at 40 kV and 40 mA (see Fig. 1(c)).…”

Section: Experimental Meansmentioning

confidence: 99%

“…As these nanowires and their networks do not have any kind of a substrate, detailed magnetic measurements of these nanostructures become possible. In the literature, several attempts to produce superconducting nanowires by the electrospinning technique are already reported for LaSrCuO 4 (LSCO), 8,9 YBa 2 Cu 3 O x (YBCO) 10 and Bi 2 Sr 2 CaCu 2 O 8 (Bi-2212), 11 but the magnetic properties of the electrospun nanowire networks were up to now not investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of electrospun non-woven superconducting fabrics

et al. 2016

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Non-woven superconducting fabrics were prepared by the electrospinning technique, consisting of Bi2Sr2CaCuO8 (Bi-2212) nanowires. The individual nanowires have a diameter of ∼150-200 nm and lengths of up to 100 μm. A non-woven fabric forming a network with a large number of interconnects results, which enables the flow of transport currents through the entire network. We present here magnetization data [M(T) and M(H)-loops] of this new class of superconducting material. The magnetic properties of these nanowire networks are discussed including the irreversibility line and effects of different field sweep rates, regarding the microstructure of the nanowire networks investigated by electron microscopy.

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“…Very recently, also superconducting nanowires and their networks were fabricated by this method [14][15][16][17][18][19]. The nanowires prepared by the electrospinning technique are polycrystalline, and these nanowires exhibit long lengths of up to 100 μm with a diameter of the order of 100-200 nm.…”

Section: Introductionmentioning

confidence: 99%

Analysis of magnetization loops of electrospun nonwoven superconducting fabrics

Zeng

Karwoth

Koblischka

et al. 2017

Phys. Rev. Materials

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Networks of superconducting Bi 2 Sr 2 CaCu 2 O 8 (Bi-2212) nanowires were fabricated by the electrospinning technique. The nanowires have a diameter of the order of 150-200 nm and lengths up to the micrometer range and form a nonwoven, fabric-like network with numerous interconnections enabling a current flow between the nanowires. The porosity of this nanowire network is 0.9928. Therefore, this material represents a novel class of ultraporous high-temperature superconductors. The magnetizations of the nanowire networks [M(T ) and M(H )] were recorded by SQUID magnetometry. The magnetic properties were analyzed using the extended critical state model (ECSM). It is supposed that the averaged diameter of the nanowires rules the magnetic field dependence of the critical current density of the nanowire network. Single nanowires have remarkably high values of the critical current density of 1.04 × 10 7 A/cm 2 at 5 K. The macroscopic critical current density less than ∼0.05 A/cm

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Fabrication of cuprate superconducting La1.85Sr0.15CuO4 nanofibers by electrospinning and subsequent calcination in oxygen

Cited by 34 publications

References 22 publications

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires

Magnetic properties of electrospun non-woven superconducting fabrics

Analysis of magnetization loops of electrospun nonwoven superconducting fabrics

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Fabrication of cuprate superconducting La1.85Sr0.15CuO4 nanofibers by electrospinning and subsequent calcination in oxygen

Cited by 34 publications

References 22 publications

Commercial alumina templates as base to fabricate 123-type high-T c superconductor nanowires

Commercial alumina templates as base to fabricate 123-type high-T c superconductor nanowires

Magnetic properties of electrospun non-woven superconducting fabrics

Analysis of magnetization loops of electrospun nonwoven superconducting fabrics

Contact Info

Product

Resources

About

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires

Commercial alumina templates as base to fabricate 123-type high-T _c superconductor nanowires