H - Electricity – 01 – L
Patent
H - Electricity
01
L
356/112, 23/228,
H01L 39/12 (2006.01) C30B 23/02 (2006.01) C30B 25/02 (2006.01) H01L 39/24 (2006.01)
Patent
CA 1335954
Superconducting transition metal oxide films are provided which exhibit very high onsets of superconductivity and superconductivity at temper- atures in excess of 40°K. These films are produced by vapor deposition processes using pure metal sources for the metals in the superconducting com- positions, where the metals include multi-valent nonmagnetic transition metals, rare earth elements, and/or rare earth-like elements and alkaline earth elements. The substrate is exposed to oxygen dur- ing vapor deposition, and, offer formation of the film, ambient followed by at least one annealing step in an oxygen ambient and slow cooling over several hours to room temperature. The substrates chosen are not critical as long as they are not adversely reactive with the superconducting oxide film. Transition metals include Cu, Ni, Ti, and V, while the rare earth-like elements include Y, Sc, and La. The alkaline earth elements include Ca, Ba, and Sr.
560149
Chaudhari Praveen
Gambino Richard Joseph
Koch Roger Hilsen
Lacey James Andrew
Laibowitz Robert Benjamin
International Business Machines Corporation
Saunders Raymond H.
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