Microstructure and critical current density of zone melt textured YBa2Cu3O6+x/Y2BaCuO5 with BaSnO3 additions

1 July 1991

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 59 (1) , 120-122
https://doi.org/10.1063/1.105548

Abstract

Additions of BaSnO3 have been made to YBa2Cu3O6+x/Y2BaCuO5 composite wires to examine its potential for improving solidification processing and enhancing pinning. Zone melting has been used to produce texture in extruded YBa2Cu3O6+x (Y-123) wires with Y2BaCuO5(211) and BaSnO3 additions. BaSnO3 additions markedly improve the magnetization properties over similarly textured Y-123 or Y-123+211 wires in low fields, but do not show a noticeable improvement at higher fields (≳2 T). Microstructural effects of BaSnO3 include the growth of much larger Y-123 grains, and a substantial reduction in size of 211 precipitates. Magnetic critical current densities (Jc) in excess of 1.2×105 A/cm2 in zero field, and 3.0×104 A/cm2 at 1 T are observed.

Keywords

This publication has 19 references indexed in Scilit:

Critical currents and flux creep in melt processed high Tc oxide superconductors
Cryogenics, 1990
Texture processing of extruded YBa2Cu3O6+x wires by zone melting
Physica C: Superconductivity and its Applications, 1990
Texture processing of bulk YBa2Cu3O6+x by zone melting
Physica C: Superconductivity and its Applications, 1989
Magnetization of a YBa₂Cu₃O₇ Crystal Prepared by the Quench and Melt Growth Process
Japanese Journal of Applied Physics, 1989
A New Process with the Promise of High J_c in Oxide Superconductors
Japanese Journal of Applied Physics, 1989
High current density in bulk YBa2Cu3Ox superconductor
Applied Physics Letters, 1989
Large magnetic hysteresis in a melt-textured Y-Ba-Cu-O superconductor
Applied Physics Letters, 1989
Texture processing of YBa2Cu3O7−x by Joule heat zone melting
Physica C: Superconductivity and its Applications, 1988
High critical currents in Y-Ba-Cu-O superconductors
Applied Physics Letters, 1988
Melt-textured growth of polycrystalline ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ with high transport $J_{c}$ at 77 K
Physical Review B, 1988