Yb-123 superconducting film coating on Gd2O3 buffered nickel substrate by sol-gel method


Okuyucu H., Hascicek Y., Karakaya I.

EURO CERAMICS VIII, PTS 1-3, pp.1209-1212, 2004 (Journal Indexed in SCI) identifier

Abstract

Surface coated Yb-123 superconductor was produced by a non-vacuum sol-gel technique. Nickel tape, which was used as substrate, was annealed in reducing atmosphere to get texture. To prevent Ni reaction with Yb-123 and transfer the texture to superconductor layer, Gd2O3 buffer layer was coated on Ni tape by sol-gel method. Yb-123 was coated on top of buffer layer by using non-vacuum sol-gel technique. Crystallographic and surface properties of Ni tape, buffer layer and the superconductor film were examined by; X-ray and ESEM. Critical transition temperature of 77 K was measured by four-point method.