TY - JOUR
T1 - Superconducting Properties of Nb3Al Processed by Nb/Al Multilayer Films
AU - Watanabe, Kazuo
AU - Noto, Koshichi
AU - Morita, Hiroaki
AU - Fujimori, Hiroyasu
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1987/1
Y1 - 1987/1
N2 - The study for improvement of critical current density Jc using Nb/Al multilayer films was carried out. In order to resolve the role of the two stage heat treatment, which was very effective for powder metallurgy processed Nb3Al wires, samples deposited on quartz substrates were heat-treated under various conditions and examined by X-ray analyses. Superconducting properties were measured and compared with those of powder process. In multilayer films prepared with a nominal layer thickness ratio Nb/Al=3/1 which corresponds to 26.5 at.% Al, a thick Nb layer of 900 Å was needed to show high Jc properties. These results were much different from data reported by Bormann et al. on the 25 at.% Al multilayers.
AB - The study for improvement of critical current density Jc using Nb/Al multilayer films was carried out. In order to resolve the role of the two stage heat treatment, which was very effective for powder metallurgy processed Nb3Al wires, samples deposited on quartz substrates were heat-treated under various conditions and examined by X-ray analyses. Superconducting properties were measured and compared with those of powder process. In multilayer films prepared with a nominal layer thickness ratio Nb/Al=3/1 which corresponds to 26.5 at.% Al, a thick Nb layer of 900 Å was needed to show high Jc properties. These results were much different from data reported by Bormann et al. on the 25 at.% Al multilayers.
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U2 - 10.7567/JJAPS.26S3.939
DO - 10.7567/JJAPS.26S3.939
M3 - Article
AN - SCOPUS:84956082034
VL - 26
SP - 939
EP - 940
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - S3-2
ER -