Thermally activated flux flow characteristics: ${MgB_{2}}$ tapes

IEEE Transactions on Applied Superconductivity（2020）

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摘要

Thermally activated flux flow (TAFF) behavior is studied via magnetoresistance investigations on in situ prepared stainless steel sheathed MgB2 tapes. The thermal activation energy is analyzed using Arrhenius relation and a modified TAFF method. Temperature-dependent prefactor and nonlinear relation of U(H, T) versus T are considered to evaluate apparent activation energy U0. Results from modified...

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关键词

Conductivity,High-temperature superconductors,Superconducting magnets,Temperature dependence,Perpendicular magnetic recording,Steel

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