公开(公告)号：JPH01261230A

公开(公告)日：1989-10-18

申请号：JP8767588

申请日：1988-04-09

Applicant: TOSHIBA CORP

Inventor： YAMADA MINORU ,  MURASE AKIRA ,  HORIAGE TOORU

IPC: H01L39/12 ,  C01G1/00 ,  C01G15/00 ,  C01G29/00 ,  C30B29/22 ,  H01B12/04 ,  H01B13/00

Abstract: PURPOSE:To raise current density and to lessen reduction in critical current density by magnetic field, by orientating specific oxide superconductor powder in the direction to send electric current in plane C of crystal. CONSTITUTION:Carbonates, oxides, etc. of Bi, Sr, Ca and Cu are blended so as to make an atomic ratio of 2:2:2:3 or Tl, Ba, Ca and Cu are blended in an atomic ratio of 2:2:1:2 or 2:2:2:3, calcined in an oxygen atmosphere at >=the melting point, ground, burnt and ground to give oxide superconductor powder having pressure, sintered at 800-900 deg.C, plane C of crystal is fixed in the direction to send an electric current to give a superconductor or the powder is packed into a metallic pipe, which is cast, rolled, drawn and the face is reduced to give a superconducting wire having plane C of crystal orientated in the longer direction.