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Scaling relations describing the electromagnetic behaviour of coatedconductors (CCs) greatly simplify the design of REBCO-based devices. Theperformance of REBCO CCs is strongly influenced by fabrication route, conductorarchitecture and materials, and these parameters vary from one manufacturer tothe others. In the present work we have examined the critical surface for thecurrent density, Jc(T,B,$\theta$), of coated conductors from six differentmanufacturers: American Superconductor Co. (US), Bruker HTS GmbH (Germany),Fujikura Ltd. (Japan), SuNAM Co. Ltd. (Korea), SuperOx ZAO (Russia) andSuperPower Inc. (US). Electrical transport and magnetic measurements wereperformed at temperatures between 4.2 K and 77 K and in magnetic field up to 19T. Experiments were conducted at three different orientations of the field withrespect to the crystallographic c-axis of the REBCO layer, $\theta$ = 0$\deg$,45$\deg$ and 90$\deg$, in order to probe the angular anisotropy of Jc. In spiteof the large variability of CCs performance, we show here that field andtemperature dependences of Jc at a given angle can be reproduced over wideranges using a scaling relation based only on three parameters. Furthermore, wepresent and validate a new approach combining magnetic and transportmeasurements for the determination of the scaling parameters with minimalexperimental effort.

Field and temperature scaling of the critical current density in commercial REBCO coated conductors