Enhancing the cost-effectiveness and performance of Rare Earth Barium Copper Oxide(REBCO)coated conductors remains a key objective for advancing applications in power transmission,fusion energy,particle accelerators,a...Enhancing the cost-effectiveness and performance of Rare Earth Barium Copper Oxide(REBCO)coated conductors remains a key objective for advancing applications in power transmission,fusion energy,particle accelerators,and rotating machines.One direct method to achieve this is by increasing the conductor’s critical current under operational conditions.This study introduces a major breakthrough in fabricating Zr-doped(Gd,Y)BaCuO double-sided tapes utilizing an Advanced Metal Organic Chemical Vapor Deposition(A-MOCVD)technique.A single-pass deposition resulted in uniform films of∼4μm on both sides of the tape,with critical current values at 20K and 20T consistently above 950 A/4 mm,peaking at 1100 A/4 mm.Additionally,a self-field transport critical current of 930 A/4 mm was attained in self-field conditions at 77 K,0 T,translating to a critical current density of 2.9 MA/cm^(2).These results represent some of the highest reported performance metrics for REBCO tapes of this thickness,underscoring the potential of double-sided A-MOCVD processing for next-generation superconducting applications.展开更多
基金Funding for this study was provided by ARPA-E,USA through grant DE-AR0001374NHMFL has been supported by NSF,USA DMR-1644779 and the state of Florida.
文摘Enhancing the cost-effectiveness and performance of Rare Earth Barium Copper Oxide(REBCO)coated conductors remains a key objective for advancing applications in power transmission,fusion energy,particle accelerators,and rotating machines.One direct method to achieve this is by increasing the conductor’s critical current under operational conditions.This study introduces a major breakthrough in fabricating Zr-doped(Gd,Y)BaCuO double-sided tapes utilizing an Advanced Metal Organic Chemical Vapor Deposition(A-MOCVD)technique.A single-pass deposition resulted in uniform films of∼4μm on both sides of the tape,with critical current values at 20K and 20T consistently above 950 A/4 mm,peaking at 1100 A/4 mm.Additionally,a self-field transport critical current of 930 A/4 mm was attained in self-field conditions at 77 K,0 T,translating to a critical current density of 2.9 MA/cm^(2).These results represent some of the highest reported performance metrics for REBCO tapes of this thickness,underscoring the potential of double-sided A-MOCVD processing for next-generation superconducting applications.
