H - Electricity – 01 – L
Patent
H - Electricity
01
L
H01L 39/12 (2006.01)
Patent
CA 2295848
A high-temperature superconductor capable of maintaining a large critical current density in the presence of an applied magnetic field is described. The superconductor comprises crystalline YBa2Cu3O7-d and a plurality of small- sized non-reactive non-deformable particles, such as Y2BaCuO5, which make up at least 10 % of the initial volume of the superconductor material. The non- reactive non-deformable particles have a sufficiently small radius of curvature so as to increase localized stress in the superconductor and induce the formation of intersecting twins and secondary microtwin structures, which act as pinning centers for applied magnetic flux, in the crystalline YBa2Cu3O7- d.
L'invention porte sur des supraconducteurs à température "élevée" capables de conserver une importante densité de courant en présence d'un champ magnétique faits de YBa¿2?CuO¿7-d? cristallin et de nombreuses petites particules non réactives et non déformables, telles que du Y¿2?BaCuO¿5? représentant jusqu'à au moins 10 % du volume initial du matériau supraconducteur. Les particules non réactives et non déformables ont un rayon de courbure suffisamment faible pour accroître les contraintes localisées dans le supraconducteur et entraîner la formation de structures intersécantes jumelles et microjumelles secondaires agissant comme centres de pinning du flux magnétique dans le YBa¿2?CuO¿7-d? cristallin.
Chan Siu-Wai
Chopra Manoj
Smart & Biggar
The Trustees Of The Columbia University In The City Of New York
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