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Creation of high-pinning microstructures in post production YBCO coated conductors
US9543496B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9543496-B2 |
| Application number | US-201414215947-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 17, 2014 |
| Priority date | Mar 17, 2014 |
| Publication date | Jan 10, 2017 |
| Grant date | Jan 10, 2017 |
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Abstract
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A method comprising irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer with protons having an energy of 1 to 6 MeV. The irradiating process produces an irradiated layer that comprises randomly dispersed defects with an average diameter in the range of 1-10 nm.
First claim
Opening claim text (preview).
What is claimed is: 1. A method, comprising: irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer comprising at least one selected from the group consisting of metal oxide precipitates, columnar defects, and stacking faults with protons having an energy of 1 to 6 MeV, such that the irradiated layer comprises uniformly distributed randomly dispersed defects with an average diameter in the range of 1-10 nm and the at least one selected from the group consisting of metal oxide precipitates, columnar defects, and stacking faults. 2. The method of claim 1 , wherein the rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer comprises a material with the general formula: (RE)Ba 2 Cu 3 O 7 where RE is at least one rare earth metal. 3. The method of claim 2 , wherein RE comprises Yttrium. 4. The method of claim 1 , wherein the irradiation has a fluence of at least 1.5×10 16 p/cm 2 . 5. The method of claim 1 , further comprising maintaining the layer at a temperature of less than 200° C. throughout the irradiation. 6. The method of claim 1 , further comprising cooling the layer during the irradiation. 7. The method of claim 1 , wherein the layer is disposed over a textured substrate. 8. The method of claim 1 , wherein the irradiated layer exhibits a superconducting critical current density measured in a c-axis applied magnetic field of at least 1.5 T at a temperature of 27 K at least 10% greater than a reference material of the same chemical composition that does not include the randomly dispersed defects. 9. The method of claim 1 , wherein a metallic protective layer is disposed over the polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer, and irradiating the polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer comprises passing the protons through the metallic protective layer.
Assignees
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Classifications
Electricity · mapped topic
- H01L39/126Primary
Electricity · mapped topic
Electricity · mapped topic
Metal or metal compound · CPC title
comprising high-Tc ceramic materials · CPC title
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- What does patent US9543496B2 cover?
- A method comprising irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer with protons having an energy of 1 to 6 MeV. The irradiating process produces an irradiated layer that comprises randomly dispersed defects with an average diameter in the range of 1-10 nm.
- Who is the assignee on this patent?
- Uchicago Argonne Llc
- What technology area does this patent fall under?
- Primary CPC classification H01L39/126. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 10 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).