Dynamics of trapped magnetic flux in superconducting FeTe0.65Se0.35
S.I. Bondarenko, A.N. Bludov, V.P. Koverya, S.I. Link, A.G. Sivakov,, V.P. Timofeev, D.J. Gawryluk, R. Puzniak, A. Wisniewski
TL;DR
This study investigates the magnetic flux dynamics in FeTe0.65Se0.35 superconductors, revealing how growth rate-induced microstructural differences affect magnetic properties and flux relaxation.
Contribution
It provides new insights into how high growth rates influence the magnetic behavior and flux relaxation in FeTe0.65Se0.35 superconductors.
Findings
Higher growth rate results in narrower superconducting transition
Microstructural differences affect magnetic properties
Relaxation times vary with growth conditions
Abstract
The magnetic moment in the superconducting and normal state of a crystalline FeTe0.65Se0.35 superconductor, grown by the Bridgman's method with relatively high growth rate, was measured. The temperature and magnetic field dependences of magnetization and its relaxation time were determined. Studied crystal, being non-uniform due to high growth rate of 5 mm/h, exhibits smaller width of superconducting transition in comparison with an ideal crystal grown with velocity of 1 mm/h, and the difference in magnetic properties of crystals grown with various growth rate, related to their microstructure, is discussed.
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