Efficient growth of HTS films with volatile elements
AssigneeSandia Corporation
InventorsMichael P. Siegal, Donald L. Overmyer, Frank Dominguez
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Abstract
A system for applying a volatile element-HTS layer, such as Tl-HTS, to a substrate in a multiple zone furnace, said method includes heating at higher temperature, in one zone of the furnace, a substrate and adjacent first source of Tl-HTS material, to sublimate Tl-oxide from the source to the substrate; and heating at lower temperature, in a separate zone of the furnace, a second source of Tl-oxide to replenish the first source of Tl-oxide from the second source.
Claims11
A method for converting a nonsuperconducting precursor into a volatile element (VE)-high temperature superconducting (HTS) layer on a substrate in a furnace, said method comprising:
- heating a substrate including a precursor and adjacent first source of VE-HTS material at a high temperature, wherein VE-oxide sublimates from the source to the precursor;
- and
- heating a secondary source of VE-oxide at a lower temperature than the high temperature, wherein VE-oxide from said secondary source replenishes the VE in the first source.
A method for converting a nonsuperconducting precursor on a substrate into a Tl-HTS layer in a multiple zone furnace having an elongate tube, said method comprising:
- heating in one zone of the furnace and within the tube, the substrate and adjacent first source of Tl-HTS material at a high temperature, wherein Tl-oxide sublimates from the source to the precursor;
- heating at lower temperature than the high temperature, in a separate zone of the furnace and within the tube, a second source of Tl-oxide, wherein Tl-oxide from said second source replenishes the Tl-oxide in the first source;
- moving the substrate from the one zone to an adjacent cooling zone;
- sealing the interior of the tube from the substrate;
- and
- removing the substrate from the furnace.
Dependencies are inferred from the claim text.