Silver paint as a soldering agent for DyBaCuO single-domains welding

TL;DR

This study explores the use of silver paint as a soldering agent for welding DyBaCuO single-domains, demonstrating that it creates clean junctions without degrading superconducting properties.

Contribution

It introduces a novel soldering method using silver paint for DyBaCuO superconductors, maintaining microstructural integrity and superconducting performance.

Findings

Clean microstructure in the joined area without secondary phases

Superconducting transition remains narrow after welding

Electrical and magnetic properties are preserved

Abstract

Silver paint has been tested as a soldering agent for DyBaCuO single-domain welding. Junctions have been manufactured on Dy-Ba-Cu-O single-domains cut either along planes parallel to the c-axis or along the ab-planes. Microstructural and superconducting characterisations of the samples have been performed. For both types of junctions, the microstructure in the joined area is very clean: no secondary phase or Ag particles segregation has been observed. Electrical and magnetic measurements for all configurations of interest are reported $\rho(T)$ curves, and Hall probe mapping). The narrow resistive superconducting transition reported for all configurations shows that the artificial junction does not affect significantly the measured superconducting properties of the material.