Dropwise deposition of a patterned oxide superconductor
AssigneeAmerican Superconductor Corporation
InventorsMartin Rupich, Comelis Thieme
Life of this patent
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Abstract
An oxide superconductor article having an oxide superconductor layer of a predetermined pattern is prepared by continuously advancing a wire having a textured surface into a deposition zone, dispensing droplets of a precursor solution to an oxide superconductor from a reservoir and the depositing droplets onto the textured surface of the wire that is introduced into the deposition zone, heating the wire or tape in the reaction zone under conditions to convert the precursor solution into an oxide superconductor; and collecting the wire after heating.
Claims54
A method of preparing a superconducting article, comprising:
- a. providing a precursor solution comprising precursor components to a rare earth-alkaline earth metal-transition metal oxide solubilized in one or more solvents;
- b. depositing the precursor solution as droplets onto a target surface in a pre-determined pattern, said target surface comprising a textured surface of a wire;
- and
- c. converting the deposited precursor solution into an oxide superconductor.
A method of preparing a superconducting article, comprising:
- a. providing a precursor solution comprising precursor components to a rare earth-alkaline earth metal-transition metal oxide solubilized in one or more solvents;
- b. depositing the precursor solution as droplets onto a textured surface of a wire to form a substantially continuous coating on the textured surface over length of the wire;
- and
- c. converting the deposited precursor solution into an oxide superconductor.
A method for preparing an oxide superconductor article having an oxide superconductor layer of a predetermined pattern, comprising:
- a. continuously advancing a wire having a textured surface into a deposition zone;
- b. dispensing droplets of a precursor solution to an oxide superconductor from a reservoir and the depositing droplets onto the textured surface of the wire or tape that is introduced into the deposition zone;
- c. heating the wire in the reaction zone under conditions to convert the precursor solution into an oxide superconductor;
- and
- d. collecting the wire or tape after heating of step (c).
A system for preparing an oxide superconductor article having an oxide superconductor layer of a predetermined pattern, comprising:
- a. a feeder for continuously advancing a continuous length of substrate into a deposition zone;
- b. a reservoir for holding a precursor solution to an oxide superconductor;
- c. a dropwise dispenser for discharging and depositing droplets of a precursor solution onto a tape or wire that is introduced into the deposition zone;
- d. a motor for continuously advancing a tape or wire into a reaction zone;
- e. a heater in the reaction zone capable of temperature and atmosphere control;
- and
- f. an up-take roll for continuously collecting a continuous length of substrate.
An article comprising:
- a substrate comprising a textured surface;
- and
- a patterned oxyfluoride layer deposited over the textured surface of the substrate, the oxyfluoride layer comprising the constituent metals of an oxide superconductor, and the pattern comprising a plurality of filaments extending substantially continuously along the length of the wire.
A method of making a superconducting article, comprising:
- a. depositing a first layer on a target surface, the first deposition step comprising:
- depositing a precursor solution comprising precursor components to an oxide superconductor solubilized in one or more solvents as droplets onto an exposed area of the target surface;
- b. depositing a second layer on the first layer, said second layer comprising a barrier material or precursor thereto covering at least a portion of the first layer;
- and
- c. depositing a third layer on an underlying layer, the third deposition step comprising depositing a precursor solution comprising precursor components to an oxide superconductor solubilized in one or more solvents as droplets onto an exposed area of the underlying layer.
Dependencies are inferred from the claim text.