| 摘要 |
PURPOSE:To obtain a foil shaped oxide superconductor having a c axis oriented toward its thickness direction by cooling an oxide superconducting melted material and forming a foil shaped superconductor by means of a gap formed between a pair of rolls with a temperature difference between the pair of rolls. CONSTITUTION:When a temperature difference is set between a pair of rolls, where a thermal conductivity of a first roll 4 is such as lambda1 and a thermal conductivity of a second roll 5 is lambda2(lambda1>lambda2), one side of a melt 3 of the superconducting material making contact with the first roll 4 is held at a lower temperature in comparison with the temperature of the other side of the melt 3 making contact with the second roll 5, and thus a temperature difference is generated. Thereby, a foil shaped conductor can be obtained since the hardening of the melt 3 is developed toward the second roll 5 from the first roll 4, and a thickness direction of the shortest portion in thickness of the foil shaped conductor becomes a c axis direction. |
