Superconducting wire and its production method

Details Superconducting wire and its production method Superconducting wire and its production method

H - Electricity

01

B

H01B 12/06 (2006.01) H01B 13/00 (2006.01)

Patent

CA 2522078

A superconducting wire (10) where a superconducting layer (3) is formed on a metal substrate which is an oriented metal substrate (1). The shift angle of the crystal axis from the orientation axis in the surface layer extending from the surface to the depth of 300 nm is 25~ or less, and the surface is planarized to have a surface roughness RP-V of 150 nm or less. A method for producing such a superconducting wire is also disclosed. The superconducting wire has high superconduction performance thanks to the planarization of the oriented metal substrate while maintaining the biaxial orientation in the surface layer of the substrate.

L'invention porte sur un fil supraconducteur (10) dans lequel une couche supraconductrice (3) est formée sur un substrat métallique qui est un substrat métallique orienté (1). L'angle de l'axe de cristal décalé de l'axe d'orientation dans la couche superficielle s'étendant de la surface à une profondeur de 300 nm est inférieur ou égal à 25·, et la surface est planarisée de façon à avoir une rugosité R<SB>P-V </SB>inférieure ou égale à 150 nm. L'invention porte également sur un procédé de fabrication de ce fil supraconducteur. Le fil supraconducteur a une excellente performance de supraconduction grâce à la planarisation du substrat métallique orienté tout en conservant l'orientation biaxiale de la couche superficielle du substrat.

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