A New Approach for the Fabrication of MgB2 Superconducting Tape with Large In-field Transport Critical Current Density

Abstract

The paper reports the first successful fabrication of MgB2 superconducting tape using a flexible metallic substrate as well as its strong pinning force, which was verified by direct measurement of transport critical current density. The tape was prepared by depositing MgB2 film on a Hastelloy tape buffered with an YSZ layer. The Jc of the tape exceeds 105A/cm2 at 4.2K and 10T, which is considered as a common benchmark for magnet application. The Jc dependence on magnetic field remains surprisingly very small up to 10T, suggesting that the tape has much better magnetic field characteristic than conventional Nb-Ti wires in liquid helium.

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References in corpus (10)

• Superconductivity in Dense $Mg{B}_2$ Wires
• Thin Film Magnesium Boride Superconductor with Very High Critical Current Density and Enhanced Irreversibility Field
• Large transport critical currents in unsintered MgB2 superconducting tapes
• Large transport critical currents in dense Fe- and Ni-clad MgB2 superconducting tapes
• High transport critical current density obtained for Powder-In-Tube-processed MgB2 tapes and wires using stainless steel and Cu-Ni tubes
• Superconducting Mg-B films by pulsed laser deposition in an in-situ two-step process using multi-component targets
• Superconducting properties of nanocrystalline MgB${}_2$ thin films made by an in situ annealing process
• Superconducting magnesium diboride films with Tc \approx 24K grown by pulsed laser deposition with in-situ anneal
• MgB2 superconductor thin films on Si and Al2O3 substrates
• Superconducting magnesium diboride films on Silicon with Tc0 about 24K grown via vacuum annealing from stoichiometric precursors

Cited by in corpus (10)

• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Very high upper critical fields in MgB2 produced by selective tuning of impurity scattering
• Limits of the upper critical field in dirty two-gap superconductors
• Prospects for Improving the Intrinsic and Extrinsic Properties of Magnesium Diboride Superconducting Strands
• Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2
• Thermally-activated current transport in MgB_2 films
• Titanium additions to MgB2 conductors
• MgB2 coated superconducting tapes with high critical current densities fabricated by hybrid physical-chemical vapor deposition
• Influence of the Preparation Process on Microstructure, Critical Current Density and Tc of MgB2 Powder-In-Tube Wires
• Enhanced $T_{\mathrm{c}}$ in eutectic high-entropy alloy superconductors Hf-Nb-Sc-Ti-Zr