In-Field Current Transport Properties of 600 A-Class GdBa2Cu3O7-δ Coated Conductor Utilizing IBAD Template

We have investigated critical current I-c properties of 600 A/cm-class GdBa2Cu3O7-delta (GdBCO) coated conductor (CC) deposited on IBAD template. 2.5 mu m thick GdBCO layer has been obtained by pulse laser deposition without degradation of critical current density by an improved heating condition in reel-to-reel deposition process. This enables stable production of long length CC with I-c (77 K, self-field) of 600 A/cm-w. In-filed I-c has also shown high value e.g., I-c@77K, 3 T = 33 A/cm-w, I-c@20 K, 27 T = 107 A/cm-w. These experimental results obtained in a wide range of bias conditions of temperature T, magnetic field beta and field angle theta are useful as a fundamental data for design of superconducting devices such as coil winding and magnet. Furthermore, we have also shown that our proposed analytical expression of electric field vs. current density (E-J) characteristics agrees well with the experimental results. This analytical expression allows us to predict I-c-B-Tproperty as well as E-J characteristics at arbitrary conditions of and