公开(公告)号：JP2003095650A

公开(公告)日：2003-04-03

申请号：JP2002154900

申请日：2002-05-29

Applicant: INT SUPERCONDUCTIVITY TECH

Inventor： YU CHO ,  YU HIYO ,  GO HAJIME ,  MACHI TAKAHITO ,  SATSUMOTO ANSHIKI ,  KOSHIZUKA NAOKI ,  MURAKAMI MASAHITO

IPC: C04B35/58 ,  C01B35/04 ,  C01G1/00 ,  H01B13/00 ,  H01L39/12

Abstract: PROBLEM TO BE SOLVED: To produce MgB2 -based superconductor which is simple to manufacture and excellent in the mass productivity and showing an excellent superconductivity (a high critical current density and the like), retaining the property of the high critical temperature of MgB2 . SOLUTION: The MgB2 -based superconductor in which Ti and/or Ti compound scatteredly exist in the polycrystalline substance of MgB2 is manufactured by pressure-forming the mixture of Mg, B and Ti as shown in Fig. 1 and then firing the pressure-formed mixture in the atmospheric pressure and the like (preferably at the temperature not less than 600 deg.C). It is preferred to give the composition of MgB2 -based superconductor in the range of 0.7