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The J c-field dependence obtained from the M-H loops at different temperatures measured on a Ba0.72K0.28Fe2As2 single crystal.
Temperature dependence of the normalised measured current density J c at magnetic fields of 1, 3, 4, and 5 T. The solid lines are the theoretical curves obtained based on the model of the δl (blue curves) pinning mechanism, the model of the the δT c (black curves) pinning mechanism, and the coexistence of both (red curves) pinning mechanisms.
δl and δT c pinning contributions as functions of temperature in Ba0.72K0.28Fe2As2 single crystal at different magnetic fields.
Magnetic field dependences of the δl and the δT c pinning contributions in Ba0.72K0.28Fe2As2 single crystal at different temperatures.
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