Processing of electroplated Bi-2212/Ag tapes using a melt-quench and annealing method

Abstract

Bi-2212 precursor films were deposited on both sides of polycrystalline Ag tapes by electrodeposition. After a melt-quench and annealing process, highly c-axis textured Bi-2212 films were obtained on Ag tapes. The full-width at half-maximum of the (008) rocking curve was around 5.8°, and scanning electron microscopy measurements indicated that the Bi-2212 films had a dense and melted plate-like structure. The superconducting transition temperature, Tc (zero resistance), was about 82.4 K, and a critical current density, Jc (75 K, 0 T), of 29 kA cm−2 was observed in transport measurements. A Jc (4.2 K, 0 T) value of about 0.3 MA cm−2 was calculated from magnetization measurements. The mechanism of formation of the Bi-2212 superconductor in the melt-quench and annealing process is discussed.

Growth and superconducting properties of Bi2 Sr2 CaCu2 O8 + δ thin films incorporated with iridate nanoparticles

“…Note that the current technique is straightforward and simple than the conventional in situ PLD, which requires a more complicated heat treatment . Also, the annealing time used in this current method was significantly shorter than in other (12–14 h) melt‐quenched techniques .…”