Preparation and Transport Properties of TlBa_2Ca_2Cu_3O_y Thin Films by Metalorganic Deposition

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概要

• 論文の詳細を見る

• Thin films of the TlBa_2Ca_2Cu_3O_y (Tl-(1223)) system were successfully prepared on SrTiO_3(100) substrates by means of the deposition of a Ba-Ca-Cu-O precursor by the metalorganic deposition (MOD) method with the reaction of Tl_2O_3 vapor. The films (1 μm thickness) were composed entirely of the (1223) phase and had a highly c-axis-oriented structure. The films had T_<c zero>=106 K and showed a high transport critical current (I_c) of 6.3 A with a 1-mm-wide bridge, which corresponds to the transport critical current density (J_c) of 6.3×10^5 A/cm^2 at 77 K in a zero magnetic field. When the magnetic field was applied perpendicular to the a-b plarne, the J_c values were 2.0×10^4 arrd 6.0×10^5 A/cm^2 at 77 and 40 K in a 1 T field, respectively. Moreover, the history effect of J_c in the magnetic field was not observed at 77K below 0.1 T. These results indicate that the Tl-(1223) film, formed by the MOD method, has strong magnetic flux pinning characteristics and good interganular connectivity.

• 社団法人応用物理学会の論文
• 1993-06-15

著者

• Nabatame Toshihide

  Hitachi Research Laboratory Hitachi Ltd.

• Nabatame Toshihide

  Mirai Project Association Of Super-advanced Electronics Technology (aset)

• Hirabayashi Izumi

  Superconductivity Research Laboratory International Superconductivity Technology Center

• KOIKE Shuichi

  Superconductivity Research Laboratory, International Superconductivity Technology Center

• NABATAME Toshihide

  Superconductivity Research Laboratory, International Superconductivity Technology Center

• Nabatame Toshihide

  Superconductivity Research Laboratory International Superconductivity Technology Center

• Koike S

  Superconductivity Research Laboratory International Superconductivity Technology Center

• Hirabayashi Izumi

  Superconductivity Research Laboratory (SRL), International Superconductivity Technology Center (ISTEC), 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

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