NDLI: Microstructures of high-T/sub c/ superconducting films having artificial pinning centers

Content Provider	IEEE Xplore Digital Library
Author	Ichinose, A. Matsumoto, K. Mukaida, M. Yoshida, Y. Horii, S. Akita, S.
Copyright Year	2002
Abstract	REBa/sub 2/Cu/sub 3/O/sub y/ (REBCO) is expected to be used in numerous applications, such as power transmission cables, high-field magnets and generators, due to the possibility of a high critical current density at 77 K under a high magnetic field. Biaxially textured REBCO superconducting tapes are developed to obtain high-J/sub c/. However, the J/sub c/-B characteristics of REBa/sub 2/Cu/sub 3/O/sub y/ films have a magnetic field angle dependency. When the magnetic field is applied parallel to the film surface, the reduction in J/sub c/ is not larger under a high magnetic field of 10 T. When the magnetic field is applied perpendicular to the film surface, the reduction in J/sub c/ is significantly large under a magnetic field of more than around 5 T at 77 K. From the viewpoint of realizing wide applications of high-T/sub c/ superconductors, it is important to improve the J/sub c/-B characteristics of REBCO films under magnetic fields higher than 5 T applied perpendicular to the film surface. Our group focuses on artificial pinning centers (APCs) introduced into REBCO films. The J/sub c/-B characteristics of certain films are improved by the introduction of APCs. The microstructures of these films are investigated using transmission electron microscopy (TEM). We report on the microstructures of REBCO films with APCs.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3718
Ending Page	3721
Page Count	4
File Size	1659939
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstructure Magnetic films Magnetic fields Superconducting films Power transmission Superconducting cables Magnets Power generation Critical current density High temperature superconductors Artificial pinning centers high- microstructures
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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