Current transport property in GdBCO coated conductor with artificial pinning centers in a wide range of temperature,magnetic field up to 27 T,and field angle |
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| Authors: | M Inoue R Fuger K Higashikawa T Kiss M Namba S Awaji K Watanabe A Ibi S Miyata Y Yamada T Izumi |
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| Institution: | 1. Department of Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan;2. Institute for Materials, Tohoku University, Sendai 980-8577, Japan;3. Superconductivity Research Laboratory, ISTEC, Tokyo 135-0062, Japan |
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| 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 27 T, and field angle. Due to the additional c-axis correlated pins, critical current density, Jc in B//c was enhanced and the improvement was observed in wide range of B. On the other hand, around B⊥c below 65 K, the angular dependence of n-value showed a valley-like behavior, although the Jc was increasing. In addition, the temperature dependence of the pinning force density defined as Jc × B was not scaled on an expected master curve. These results indicate the pinning in B⊥c is governed by different mechanism below 65 K and high magnetic field. |
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| Keywords: | High-Tc superconductor Superconducting wire Critical current Pinning |
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