Influence of disordering by low-temperature neutron irradiation on the superconducting transition temperature of Nb3Sn

1976 ◽  
Vol 24 (5-6) ◽  
pp. 631-644 ◽  
Author(s):  
M. S�ll ◽  
K. B�ning ◽  
H. Bauer
Keyword(s):  
Transition Temperature ◽  
Low Temperature ◽  
Neutron Irradiation ◽  
Superconducting Transition Temperature ◽  
Superconducting Transition

DEGRADATION OF Bi2Sr2Ca2Cu3Oy CERAMICS

1991 ◽  
Vol 05 (17) ◽  
pp. 1175-1178
Author(s):  
A. M. GRISHIN ◽  
V. N. KORENIVSKI ◽  
A. N. UL'YANOV
Keyword(s):  
Transition Temperature ◽  
Low Temperature ◽  
Superconducting Transition Temperature ◽  
Single Phase ◽  
Superconducting Transition ◽  
Multi Phase

The decrease of grain superconducting transition temperature of Bi 2 Sr 2 Ca 2 Cu 3 O y ceramics on low-temperature thermocycling has been revealed and studied. Results indicate that the multi-phase samples degrade more quickly and more considerably than the single-phase samples.

scholarly journals Enhancing Superconductivity of the Nonmagnetic Quasiskutterudites by Atomic Disorder

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5830
Author(s):  
Andrzej Ślebarski ◽  
Maciej M. Maśka
Keyword(s):  
High Temperature ◽  
Transition Temperature ◽  
Superconducting Transition Temperature ◽  
High Temperature Superconductors ◽  
Superconducting Phase ◽  
Length Scale ◽  
Superconducting Transition ◽  
Atomic Disorder ◽  
Strong Inhomogeneity ◽  
Related Compounds

We investigated the effect of enhancement of superconducting transition temperature Tc by nonmagnetic atom disorder in the series of filled skutterudite-related compounds (La3M4Sn13, Ca3Rh4Sn13, Y5Rh6Sn18, Lu5Rh6Sn18; M= Co, Ru, Rh), where the atomic disorder is generated by various defects or doping. We have shown that the disorder on the coherence length scale ξ in these nonmagnetic quasiskutterudite superconductors additionally generates a non-homogeneous, high-temperature superconducting phase with Tc⋆>Tc (dilute disorder scenario), while the strong fluctuations of stoichiometry due to increasing doping can rapidly increase the superconducting transition temperature of the sample even to the value of Tc⋆∼2Tc (dense disorder leading to strong inhomogeneity). This phenomenon seems to be characteristic of high-temperature superconductors and superconducting heavy fermions, and recently have received renewed attention. We experimentally documented the stronger lattice stiffening of the inhomogeneous superconducting phase Tc⋆ in respect to the bulk Tc one and proposed a model that explains the Tc⋆>Tc behavior in the series of nonmagnetic skutterudite-related compounds.

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