GROWTH OF HG0.9RE0.1BA2CA2CU3O8+X ON A METALLIC SUBSTRATE

The large-scale application of any high-temperature superconductor wil l require a metallic sheath to satisfy the mechanical and thermal requ irements of superconducting magnets. Thus, an important step in the de velopment of a high temperature superconductor is to study the propert ies of the superconductor in contact with a metallic surface. Due to t he highly corrosive atmosphere necessary for the synthesis of Hg0.9Re0 .1Ba2Ca2Cu3O8+x. ((Hg,Re)1223) the selection of a suitable metal subst rate is critical. In this study, we investigate the synthesis of(Hg,Re )1223 samples on Ag, AgHg, An, and Pt substrates. The samples were pre pared by mixing precursor powders in a dry methanol solution which was then pipette-dropped or centrifuge coated onto the metal substrates. The samples were encapsulated in quartz and annealed. Microstructural analysis of phase growth and grain alignment at the superconductor/met al interface were carried out on multiple length scales via x-ray diff raction, scanning electron microscopy, and x-ray microanalysis. Magnet ic characterization has been carried out in a SQUID magnetometer.