Processing of high-performance Gd–Ba–Cu–O bulk superconductor with Ag addition
- 10 April 2002
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 15 (5), 648-652
- https://doi.org/10.1088/0953-2048/15/5/302
Abstract
We fabricated large-grain c-axis-oriented Gd–Ba–Cu–O bulk superconductors with very fine 211 particles and studied their field-trapping properties. Single domain Gd–Ba–Cu–O/Ag bulk samples with different molar ratios of Gd-123:Gd-211 = 10:x (x = 2 to 6) were melt-textured under controlled oxygen partial pressure of 1.0% by employing Gd-211 starting powders with a particle size of 1.0 μm. The maximum trapped magnetic field of 2.0 T was recorded at 77 K in the bulk 48 mm in diameter with the composition of x = 5. It is notable that the trapped field in the space of two Gd–Ba–Cu–O bulks reached an extremely high value of 3.3 T at 77 K. Furthermore, the field-trapping performance of the bulk sample was improved by applying the ultra-fine 211 powders of a size of 0.2 μm. The single-bulk Gd–Ba–Cu–O 50 mm in diameter exhibited a trapped field of 2.6 T at 77 K.Keywords
This publication has 12 references indexed in Scilit:
- Processing of GdBa2Cu3O7−y bulk superconductor and its trapped magnetic fieldPhysica C: Superconductivity and its Applications, 2001
- Fabrication of large melt-textured GdBaCuO superconductor with Ag additionPhysica C: Superconductivity and its Applications, 2000
- YBCO — monoliths with trapped fields more than 14 T and peak effectPhysica C: Superconductivity and its Applications, 2000
- Synthesis and superconducting properties ofc-axis aligned, single-domain NdBCO/Ag, melt-processed superconductorsSuperconductor Science and Technology, 2000
- Applications of superconducting permanent magnets driven by static and pulsed fieldsSuperconductor Science and Technology, 2000
- Influence of the size of Gd211 starting powder on the critical current density of Gd-Ba-Cu-O bulk superconductorSuperconductor Science and Technology, 2000
- Synthesis of c-axis oriented single-domain Sm123 superconductors capable of trapping 9 Tesla at 25 K and its application to a strong magnetic field generatorMaterials Science and Engineering B, 1999
- Melt-processed Sm - Ba - Cu - O superconductors trapping strong magnetic fieldSuperconductor Science and Technology, 1998
- Trapped field of YBa2Cu3O7 QMG bulk magnetsMaterials Science and Engineering B, 1998
- Melt-processed light rare earth element - Ba - Cu - OSuperconductor Science and Technology, 1996