Document Type and Number:
Japanese Patent JP4048270
Kind Code:
B2
Abstract:
To provide a superconducting material exhibiting not only an excellent transition point of superconduction but also excellent critical current characteristics in upper critical field or high field and capable of sustaining that characteristics, and its producing method.
The MgB2superconducting film-like material (1) is produced by forming an Mg excess Mg-B amorphous precursor film on the surface of a basic material of metal provided or not provided with a film of a material exhibiting low reactivity to Mg-B, heating the precursor film quickly in an oxygen-free inert gas, sustaining the heating for a short time, and crystallizing microcrystal of nano size MgB2from the Mg-B amorphous precursor through quenching.
COPYRIGHT: (C)2003,JPO
Inventors:
Katsuo Fukutomi
Kazunori Komori
Kyoko Kawagishi
Kazumasa Togano
Application Number:
JP2002048331A
Publication Date:
February 20, 2008
Filing Date:
February 25, 2002
Assignee:
National Institute for Materials Science
International Classes:
H01L39/24
Domestic Patent References:
| JP2002352649A | | | | |
| JP2003095642A | | | | |
Other References:
A. Brinkman et al.,Superconducting thin films of MgB2 on Si by pulsed laser deposition ,Physica C: Superconductivity,Elsevier,2001年 5月 1日,Volume 353, Issues 1-2,Pages 1-4
H. M. Christen et al.,Superconducting magnesium diboride films with Tc=24 K grown by pulsed laser deposition with in situ anneal,Physica C: Superconductivity,Elsevier,2001年 5月15日,Volume 353, Issues 3-4,Pages 157-161
A. H. Li et al.,Fast formation and superconductivity of MgB2 thick films grown on stainless steel substrate,Physica C: Superconductivity,Elsevier,2001年 9月 1日,Volume 361, Issue 2,Pages 73-78
