NDLI: Thermal Conductivity of YBCO Coated Conductors Reinforced by Metal Tape

Content Provider	IEEE Xplore Digital Library
Author	Naito, T. Fujishiro, H. Yamamura, Y. Saito, K. Okamoto, H. Hayashi, H. Fujiwara, N. Gosho, Y. Shiohara, Y.
Copyright Year	2002
Abstract	We have measured the thermal conductivity, κ(T), of YBCO coated conductors (YCCs) reinforced by Cu or CuNi tape. κ(T) of YCC reinforced by Cu tape with 100-300 μm in thickness, YCC-Cu, was 250-400 W m^-1K^-1 at 77 K, which depended on the thickness of Cu tape and was roughly one order of magnitude larger than that of the bare YCC. On the other hand, κ(T) of YCC reinforced by CuNi tape of 300 μm thickness, YCC-CuNi, was comparable to that of the bare YCC except for the low temperatures. The contribution of each reinforcing material to the thermal transport was estimated by analyzing the measured κ(T) using an equivalent heat current circuit. The applied heat flows mainly through the Cu tape for the YCC-Cu tapes and through both CuNi tape and stabilizing Ag layer for the YCC-CuNi tapes, respectively. Phonons cannot be ignored as thermal carriers in YCC-CuNi tapes.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3037
Ending Page	3040
Page Count	4
File Size	393913
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heating Temperature measurement Thermal conductivity Conductivity Yttrium barium copper oxide Copper YBCO coated conductor Specific heat thermal conductivity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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