Current transport property in GdBCO coated conductor with artificial pinning centers in a wide range of temperature, magnetic field up to 27T, and field angle

Abstract: We have investigated current transport property in Gd1Ba2Cu3O7− δ coated conductor with artificial pinning centers in a wide range of temperature, magnetic field, B up to 27T, and field angle. Due to the additional c-axis correlated pins, critical current density, J c in B//c was enhanced and the improvement was observed in wide range of B. On the other hand, around B⊥c below 65K, the angular dependence of n-value showed a valley-like behavior, although the J c was increasing. In addition, the temperature dependence of the pinning force density defined as J c × B was not scaled on an expected master curve. These results indicate the pinning in B⊥c is governed by different mechanism below 65K and high magnetic field. [ABSTRACT FROM AUTHOR]