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Changes of Tsub(c), Jsub(c), Bsub(c2) and the lattice parameter of the Nb/sub 3/Sn phase formed at the initial stage of growth in a multifilamentary superconductive wire

Abstract

Investigations were made of the superconducting transition temperature, Tsub(c), the upper critical flux density, Bsub(c2), and the critical current density, Jsub(c), of Nb/sub 3/Sn layers in filamentary wire in a bronze matrix. The lattice parameter, a/sub 0/ and Tsub(c) of Nb/sub 3/Sn layers in 259-filament wire were determined after removal of the bronze matrix. The microstructure and layer thickness were studied using scanning electron microscopy. The diffusion formation of Nb/sub 3/Sn phase at 1023 K was studied until the complete reaction of the niobium filaments. It was found that the Nb/sub 3/Sn layer begins to form in the manufacturing process during the intermediate annealing at 793 K, and that there is a considerable degradation of critical parameters due to the nonstiochiometry of the Nb/sub 3/Sn phase in layers thinner than 1 ..mu..m.
Publication Date:
Mar 01, 1987
Product Type:
Journal Article
Reference Number:
GBN-87-003311; EDB-88-013723
Resource Relation:
Journal Name: J. Mater. Sci.; (United Kingdom); Journal Volume: 22:3
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; NIOBIUM COMPOUNDS; CRITICAL CURRENT; CRITICAL FIELD; LATTICE PARAMETERS; TRANSITION TEMPERATURE; SUPERCONDUCTING WIRES; TIN COMPOUNDS; ANNEALING; CURRENT DENSITY; DIFFUSION; EXPERIMENTAL DATA; FILAMENTS; FLUX DENSITY; HIGH TEMPERATURE; MICROSTRUCTURE; SUPERCONDUCTIVITY; VERY HIGH TEMPERATURE; X-RAY DIFFRACTION; COHERENT SCATTERING; CRYSTAL STRUCTURE; CURRENTS; DATA; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; HEAT TREATMENTS; INFORMATION; MAGNETIC FIELDS; NUMERICAL DATA; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SCATTERING; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; WIRES; 656100* - Condensed Matter Physics- Superconductivity
OSTI ID:
5703739
Research Organizations:
Politechnika Wroclawska, PL. Inst. of Fundamental Electrotechnics and Electrotechnology; Polska Akademia Nauk, Wroclaw. Inst. Niskich Temperatur i Badan Strukturalnych
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JMTSA
Submitting Site:
GBN
Size:
Pages: 775-780
Announcement Date:

Citation Formats

Glowacki, B A, and Bukowski, Z. Changes of Tsub(c), Jsub(c), Bsub(c2) and the lattice parameter of the Nb/sub 3/Sn phase formed at the initial stage of growth in a multifilamentary superconductive wire. United Kingdom: N. p., 1987. Web. doi:10.1007/BF01103511.
Glowacki, B A, & Bukowski, Z. Changes of Tsub(c), Jsub(c), Bsub(c2) and the lattice parameter of the Nb/sub 3/Sn phase formed at the initial stage of growth in a multifilamentary superconductive wire. United Kingdom. doi:10.1007/BF01103511.
Glowacki, B A, and Bukowski, Z. 1987. "Changes of Tsub(c), Jsub(c), Bsub(c2) and the lattice parameter of the Nb/sub 3/Sn phase formed at the initial stage of growth in a multifilamentary superconductive wire." United Kingdom. doi:10.1007/BF01103511. https://www.osti.gov/servlets/purl/10.1007/BF01103511.
@misc{etde_5703739,
title = {Changes of Tsub(c), Jsub(c), Bsub(c2) and the lattice parameter of the Nb/sub 3/Sn phase formed at the initial stage of growth in a multifilamentary superconductive wire}
author = {Glowacki, B A, and Bukowski, Z}
abstractNote = {Investigations were made of the superconducting transition temperature, Tsub(c), the upper critical flux density, Bsub(c2), and the critical current density, Jsub(c), of Nb/sub 3/Sn layers in filamentary wire in a bronze matrix. The lattice parameter, a/sub 0/ and Tsub(c) of Nb/sub 3/Sn layers in 259-filament wire were determined after removal of the bronze matrix. The microstructure and layer thickness were studied using scanning electron microscopy. The diffusion formation of Nb/sub 3/Sn phase at 1023 K was studied until the complete reaction of the niobium filaments. It was found that the Nb/sub 3/Sn layer begins to form in the manufacturing process during the intermediate annealing at 793 K, and that there is a considerable degradation of critical parameters due to the nonstiochiometry of the Nb/sub 3/Sn phase in layers thinner than 1 ..mu..m.}
doi = {10.1007/BF01103511}
journal = {J. Mater. Sci.; (United Kingdom)}
volume = {22:3}
journal type = {AC}
place = {United Kingdom}
year = {1987}
month = {Mar}
}