Patent ID: 8512799

Claim:
A process for producing a superconducting magnet which restrains a flux jump at the time of magnetizing in a high magnetic field, comprising the steps of: providing a high-temperature bulk superconductor material; forming an artificial hole in the high-temperature bulk superconductor material; disposing a heat-conducting metal material for restraining the heat flux jump at at least portions of the high-temperature bulk superconductor material where bonding of the heat-conducting metal material with a low melting metal material to be impregnated in the high-temperature bulk superconductor material can be made; impregnating the high-temperature bulk superconductor material with the low melting metal material in either a reduced pressure or pressurized atmosphere so that at least the artificial hole is impregnated and filled with the low-melting metal material; solidifying of the low-melting metal material and bonding the solidified low-melting metal material with the heat-conducting metal material; and magnetizing the high-temperature bulk superconductor material containing the solidified and bonded low-melting metal material in an external magnetic field with a magnetic flux density in excess of 10 T to provide the superconducting magnet.