Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K, self-field and 4.2 K, 19 T

TL;DR

This study compares the electro-mechanical properties of REBCO coated conductors from various manufacturers at different temperatures and magnetic fields to inform high-field magnet design.

Contribution

It provides a comparative analysis of the strain and stress dependence of critical current in REBCO tapes from multiple industrial sources.

Findings

Differences in electro-mechanical properties among manufacturers.

Stress and strain influence critical current performance.

Data supports optimized conductor selection for high-field applications.

Abstract

Rare-earth-barium-copper-oxide (REBCO) tapes are now available from several industrial manufacturers and are very promising conductors in high field applications. Due to diverging materials and deposition processes, these manufacturers' tapes can be expected to differ in their electro-mechanical and mechanical properties. For magnets designers, these are together with the conductors' in-field critical current performance of the highest importance in choosing a suitable conductor. In this work, the strain and stress dependence of the current carrying capabilities as well as the stress and strain correlation are investigated for commercial coated conductors from Bruker HTS, Fujikura, SuNAM, SuperOx and SuperPower at 77 K, self-field and 4.2 K, 19 T.