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Journal Articles

Enhancement of critical current densities in (Ba,K)Fe$$_{2}$$As$$_{2}$$ by 320 MeV Au irradiation in single crystals and by high-pressure sintering in powder-in-tube wires

Pyon, S.*; Taen, Toshihiro*; Otake, Fumiaki*; Tsuchiya, Yuji*; Inoue, Hiroshi*; Akiyama, Hiroki*; Kajitani, Hideki; Koizumi, Norikiyo; Okayasu, Satoru; Tamegai, Tsuyoshi*

Applied Physics Express, 6(12), p.123101_1 - 123101_4, 2013/12

https://doi.org/10.7567/APEX.6.123101
 Times Cited Count：22 Percentile：64.71(Physics, Applied)

We demonstrate a large enhancement of critical current density ($$J$$$$_{rm c}$$) up to 1.0 $$times$$ 10$$^{7}$$ A/cm$$^{2}$$ at 5 K under self-field in (Ba,K)Fe$$_{2}$$As$$_{2}$$ single crystals by irradiating 320 MeV Au ions. With the very promising potential of this material in mind, we have fabricated a (Ba,K)Fe$$_{2}$$As$$_{2}$$ superconducting wire through a powder-in-tube method combined with the hot isostatic pressing technique, whose effectiveness has been proven in industrial Bi2223 tapes. The Jc in the wire at 4.2 K has reached 37 kA/cm$$^{2}$$ under self-field and 3.0 kA/cm$$^{2}$$ at 90 kOe. Magneto-optical imaging of the wire confirmed the large intergranular Jc in the wire core.

Journal Articles

Effect of $$gamma$$-irradiation on microflora and fermentation quality of silages containing tofu cake or brewer's gain

Tanaka, Osamu*; Akiyama, Fumiaki*; Yamada, Akihisa*; Ando, Sada*; Uegaki, Ryuichi*; Kobayashi, Ryoei*; Kume, Tamikazu

Nihon Sochi Gakkai-Shi, 47(3), p.274 - 282, 2001/08

http://ci.nii.ac.jp/naid/110003850196

no abstracts in English

Journal Articles

Effect of $$gamma$$ irradiation on microflora and fermentation quality of alfalfa, orchardgrass, maize and sorgum silage

Tanaka, Osamu*; Akiyama, Fumiaki*; Yamada, Akihisa*; Ando, Sada*; Uegaki, Ryuichi*; Kobayashi, Ryoei*; Kume, Tamikazu

Nihon Sochi Gakkai-Shi, 47(1), p.62 - 67, 2001/04

http://ci.nii.ac.jp/naid/110003850364

no abstracts in English

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