Ba_2Y_1Cu_3O_<7-y> Oxidation by Thermodynamic Nonequilibrium High-Temperature (TNH) Plasma
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概要
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In order to obtain high-T_c superconducting Ba-Y-Cu-O materials, we have studied a method used to supply the oxygen content using a thermodynamic nonequilibrium high-temperature (TNH) plasma. Compared with the usual glow discharge, very-high-density atomic oxygen was observed in the TNH plasma. Treatment of the TNH plasma showed the recovery of quenched samples from the tetragonal structure to an orthorhombic 90-K superconductor within 30 min at 300℃. This is superior to usual oxidation techniques of an atmospheric oxygen anneal and a glow discharge plasma from the viewpoint of short period and low temperature.
- 社団法人応用物理学会の論文
- 1989-06-20
著者
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IHARA Hideo
Electrotechnical Laboratory
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Toyota N
Physics Department Graduate School Of Science Tohoku University
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Namiki Takahisa
Institute For Materials Research Tohoku University
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Toyota Naoki
The Research Institute For Iron Steel And Other Metals Tohoku University
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Tateiwa Naoyuki
Graduate School Of Science Tohoku University:(present) Department Of Physical Science Graduate Schoo
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HOSOKAWA Naokichi
ANELVA CORPORATION
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TERADA Norio
Electrotechnical Laboratory
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SEKIGUCHI Atsushi
ANELVA Corporation
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Jo Masatoshi
Electrotechnical Laboratory
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TAKAGI Shinji
ANELVA Corporation
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Terada N
Musashi Inst. Technology Tokyo
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Sekiguchi Atsushi
ANELVA CORP., Yotsuya 5-8-1, Fuchu 183-8508, Japan
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