Possibility of a Very High Upper Critical Field of the New High T_c Superconductor La-Ba-Cu Oxide
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概要
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The electrical resistance of La-Ba-Cu oxide has been measured under magneticfields up to 21.1 Tesla between 4.2 and 50 K. One of the samjcles completely recoversthe normal state resistance at 33.5 K in H=O, and at 25 K in H=2I.I Tesla. Resultsshow that La-Ba-C u oxide shows really superconductivity and the upper critical fieldat 0 K, #..(0), is estimated to be 56 Tesla according to the dirty limit theory of type IIsuperconductivity. Furthermore, a linear extrapolation of the H..(T ) curve to 0 K,amounts to 80 Tesla. It is expected that such a La-M-Cu oxide system (Ba, Sr, Ca) isboth a very high T. superconductor as well as very high H.. superconductor.
- 社団法人日本物理学会の論文
- 1987-04-15
著者
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Sasaki T
Tohoku Univ. Sendai‐shi Jpn
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Takasaki S
Himeji Inst. Technol. Kamigohri
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NOTO Koshichi
The Research Institute for Iron, Steel and Other Metals, Tohoku University
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Sasaki T
Division Of Materials Physics Department Of Physical Science Graduate School Of Engineering Science
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KIKUCHI Masae
The Research Institute for Iron, Steel and Other Metals, Tohoku University
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SYONO Yasuhiko
The Research Institute for Iron, Steel and Other Metals, Tohoku University
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Sasaki T
Institute For Materials Research Tohoku University
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Kikuchi Masae
The Research Institute For Iron Steel And Other Metals Tohoku University
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Syono Y
Tohoku Univ. Sendai Jpn
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Syono Yasuhiko
The Research Institute For Iron Steel And Other Metals
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MUTO Yoshio
The Research Institute for Iron, Steel and Other Metals, Tohoku University
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Sasaki Takako
The Research Institute for Iron, Steel and Other Metals
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Sasaki Takatomo
Institute Of Laser Engineering Department Of Electrical Engineering Osaka University
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KOBAYASHI Norio
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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OH-ISHI Katsuyoshi
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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SASAOKA Takaaki
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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MURASE Satoru
Toshiba R&D Center
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Muto Yoshio
The Research Institute For Iron Steel And Other Metals
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Murase S
Toshiba Corporation
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Murase Satoru
Toshiba R & D Center
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Noto Koshichi
The Research Institute For Iron Steel And Other Metals
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Moroishi K
Hoya Corp. Tokyo Jpn
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Muto Yoshio
Institute For Materials Research (imr) Tohoku University
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Oh-ishi Katsuyoshi
Institute For Materials Research Tohoku University
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Sasaki Takako
The Research Institute For Iron Steel And Other Metals
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Kobayashi Norio
The Research Institute For Iron Steel And Other Metals Tohoku University
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Sasaki Tetsuya
Institute for Materials Research, Tohoku University
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