Flux penetration into superconducting Nb3Sn in oblique magnetic fields

Diana G. Gheorghe; Mariela Menghini; Rinke J. Wijngaarden; Ernst Helmut Brandt; Grigorii P. Mikitik; Wilfried Goldacker

doi:10.1103/PhysRevB.73.224512

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Flux penetration into superconducting Nb3Sn in oblique magnetic fields

Diana G. Gheorghe, Mariela Menghini, Rinke J. Wijngaarden, Ernst Helmut Brandt, Grigorii P. Mikitik, Wilfried Goldacker

DOI 10.1103/PhysRevB.73.224512 · Physical Review B

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Abstract

Penetration of magnetic flux into a rectangular platelet of superconducting Nb3Sn subject to an oblique magnetic field is studied by magneto-optical imaging. Flux patterns are observed for three distinct scenarios in which the final magnetic field vector is applied differently: (A) the vector has a fixed direction but its magnitude changes from zero to the final value, (B) first the perpendicular component is applied and then the in-plane component, and (C) vice versa. These scenarios lead to distinctly different final states that are consistent with theoretical predictions.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb3Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	18	Pressure unresolved	unknown