On the mixing of Cu and Y by Xe ions

摘要

As part of an ongoing effort to produce highhyphen;Tcsuperconducting layers by ionhyphen;beam mixing, the mixing of Cu and Y was studied at both liquid nitrogen and room temperature, using 600hyphen;keV Xe ions and Y film thicknesses representative of multilayer mixing experiments. At low temperatures the mixing rate was found to agree with predictions based on thermal spike effects. At higher temperature the mixing is dominated by the rapid formation of the Cu7Y phase.