Critical current density of filamentary Nd123 superconductor by solution spinning method

Author

Kimura, T. ; Goto, T. ; Watanabe, K.

Author_Institution

Nagoya Inst. of Technol., Japan

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

2101

Lastpage

2104

Abstract

We have studied the fabrication of filamentary Nd123 superconductor with high superconducting properties. The filamentary Nd123 precursor was prepared by the solution spinning method, through a homogeneous aqueous solution containing mixed acetates of Nd, Be, Cu, poly (vinyl alcohol) and organic acids. The filamentary sample was partially melted at 990/spl deg/C in flowing 0.1%O/sub 2/+Ar and oxygenated under various conditions. The transport critical current density (J/sub c/) for the samples was examined in magnetic fields up to 9.5 T at 77 K. The highest J/sub c/ value of 3.5/spl times/10/sup 4/ A/cm/sup 2/ at 77 K and 0 T and more than 10/sup 4/ A/cm/sup 2/ at 77 K and at 2 T was achieved for the filamentary Nd/sub 1.18/Ba/sub 2.12/Cu/sub 3.09/O/sub x/ superconductor by controlling the oxygenation conditions.

Keywords

barium compounds; critical current density (superconductivity); crystal growth from solution; heat treatment; high-temperature superconductors; neodymium compounds; 0 to 9.5 T; 77 K; NdBa/sub 2/Cu/sub 3/O/sub 7/; critical current density; filamentary superconductor; homogeneous aqueous solution; oxygenation conditions; solution spinning; Cooling; Critical current density; Flux pinning; Heat treatment; Magnetic fields; Neodymium; Spinning; Superconducting filaments and wires; Superconducting magnets; Superconducting materials;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.784881

Filename

784881