Control of grain alignment to fabricate long Y-Ba-Cu-O superconductors with high current density
- 29 June 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (26), 3313-3315
- https://doi.org/10.1063/1.106677
Abstract
A directional solidification method has been developed to grow YBa2Cu3Ox samples in excess of 55 mm in length with uniform grain alignment and a-b planes oriented parallel to the sample length. Using a furnace configuration that yields a negative lateral gradient, the YBa2Cu3Ox grains have been forced to nucleate and grow along the axis instead of at an angle to the sample length. X-ray pole figures analyses along the entire length at different sections show that the a-b planes are aligned parallel to the sample length with deviations less than 5° along the growth direction. Transport critical current density (Jc) measurements over the entire length and at different sections of the sample reveal a uniform current density in excess of 7000 A/cm2 at 1.5 T and 77 K.Keywords
This publication has 14 references indexed in Scilit:
- Semisolid solidification of high temperature superconducting oxidesJournal of Applied Physics, 1992
- Grain growth in monolithic YBa2Cu3O7 with high JcPhysica C: Superconductivity and its Applications, 1991
- High-transport current density up to 30 T in bulk YBa2Cu3O7 and the critical angle effectApplied Physics Letters, 1991
- Critical current anisotropy in liquid phase processed YBa2Cu3Ox superconductorsPhysica C: Superconductivity and its Applications, 1991
- DC transport measurements at 77 K of high J/sub c/ cryostabilized melt processed YBCO monofilamentIEEE Transactions on Applied Superconductivity, 1991
- Large Levitation Force due to Flux Pinning in YBaCuO Superconductors Fabricated by Melt-Powder-Melt-Growth ProcessJapanese Journal of Applied Physics, 1990
- Luminescence and Energy Levels of Mn2+ in LnMB5O10 (Ln=La, Gd and Y; M=Mg, Zn and Cd)Japanese Journal of Applied Physics, 1990
- Irreversible behaviour of oriented grained YBa2Cu3Ox. Part 1: transport and shielding currentsCryogenics, 1990
- Manufacture of bulk superconducting YBa2Cu3O7-δ by a continuous processNature, 1990
- A New Process with the Promise of High Jc in Oxide SuperconductorsJapanese Journal of Applied Physics, 1989