Neutron Irradiation of MgB2 Bulk Superconductors

Abstract

Sintered samples of MgB2 were irradiated in a fission reactor. Defects in the bulk microstructure are produced during this process mainly by the 10B(n,a)7Li reaction while collisions of fast neutrons with the lattice atoms induce much less damage. Self-shielding effects turn out to be very important and lead to a highly inhomogeneous defect distribution in the irradiated samples. The resulting disorder enhances the normal state resistivity and the upper critical field. The irreversibility line shifts to higher fields at low temperatures and the measured critical current densities increase following irradiation.

to be published in Superconductos Science and Technology

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Cited by in corpus (22)

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• Neutron Irradiation of Mg11B2 : From the Enhancement to the Suppression of Superconducting Properties
• Effect of two bands on critical fields in MgB2 thin films with various resistivity values
• Significant enhancement of flux pinning in MgB2 superconductor through nano-Si addition
• Specific heat of MgB_2 after irradiation
• Enhanced flux pinning in neutron irradiated MgB2
• Superconducting and Normal State Properties of Neutron Irradiated MgB2
• Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2
• Significant enhancement of irreversibility field in clean-limit bulk MgB2
• Influence of the upper critical field anisotropy on the transport properties of polycrystalline MgB${}_2$
• Systematic study of disorder induced by neutron irradiation in MgB2 thin films
• Transport Properties and Exponential n-values of Fe/MgB2 Tapes With Various MgB2 Particle Sizes
• Intraband versus interband scattering rate effects in neutron irradiated MgB2
• Effect of La Doping on Microstructure and Critical Current Density of MgB2
• Neutron Irradiation of Sm-1111
• Effects of Neutron Irradiation on Carbon Doped MgB2 Wire Segments
• Uranium Doping and Thermal Neutron Irradiation Flux Pinning Effects in MgB2
• Influence of carbon on intraband scattering in Mg(B1-xCx)2
• Enhancement of $J$${}_c$ by Proton Irradiation in HgBa${}_2$Ca${}_2$Cu${}_3$O${}_8$${}_{+}$${}_{\delta }$ Single Crystals