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within Akihiko Nagata Remove this filter Strongly Correlated Systems, Superconductivity Remove this filter

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  1. No Access

    Chapter and Conference Paper

    Effect of Oxygen Partial Pressure on the Microstructure and Formation of Bi-2223 Phase in the Partial-melting and Sintering Process

    The effect of oxygen partial pressure on the microstructure and formation of the (Bi,Pb)-2223 phase in the partial-melting and sintering process was studied. Samples with two nominal compositions Bi1.84Pb0.34Sr1....

    **aoye Lu, Akihiko Nagata, Naotoshi Sato… in Advances in Superconductivity XII (2000)

  2. No Access

    Chapter and Conference Paper

    Effect of MgO, Ag2O, PtO2 Particles on the Microstructure and Superconducting Properties of Ag Sheathed (Bi,Pb)-2223 Tapes

    The effects of MgO, Ag2O, PtO2 particles on the microstructure and pinning properties of Ag sheathed (Bi,Pb)-2223 tapes were studied by means of XRD, SEM, EDS, AC susceptibility and Jc measurements. Samples were ...

    **aoye Lu, Akihiko Nagata, Minoru Yasuda… in Advances in Superconductivity XI (1999)

  3. No Access

    Chapter and Conference Paper

    Texture and Formation of (Bi,Pb)-2223 Phase in the Partial-Melting, Air-Cooling and Sintering Process

    The texture and formation of (Bi,Pb)-2223 phase in the partial-melting, air-cooling and sintering process have been studied by means of XRD, SEM,EDS and AC susceptibility measurements. The 2223 phase with grai...

    **aoye Lu, Akihiko Nagata, Minoru Yasuda… in Advances in Superconductivity X (1998)

  4. No Access

    Chapter and Conference Paper

    Round Robin Test Results on Bi(2223)/Ag Muliticored Tape Samples

    Results of round robin test(RRT) undertaken by the Feasibility Study(FS) committee (project leader: Y. Kimura) in Japan Fine Ceramics Association(JFCA) in 1996 JFY will be reported. Total 18 premounted Bi (222...

    Koshichi Noto, Yoichi Kimura, Akihiko Nagata… in Advances in Superconductivity X (1998)

  5. No Access

    Chapter and Conference Paper

    Texture Study of Pressed YBa 2Cu3O7−x Polycrystals by Electron Channeling Patterns

    (001) pole figures of YBa2Cu3O7−x tapes and bulk specimens with various values of critical current density (Jc) were drawn by analyzing electron channeling patterns (ECPs) taken from individual grains of the spec...

    Whang ** Kang, Shuji Hanada, Kyosuke Yoshimi… in Advances in Superconductivity III (1991)