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1. WO2020117369 - SUPERCONDUCTOR FLUX PINNING WITHOUT COLUMNAR DEFECTS

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[ EN ]

WHAT IS CLAIMED IS:

1. A thin film composite high-temperature superconducting article comprising: a substrate;

a buffer layer; and

a high-temperature superconducting layer,

wherein the high-temperature superconducting layer further comprises non superconducting material distributed preferentially along the a-b plane coplanar with the superconducting layer.

2. The superconducting article of claim 1 , wherein the non-superconducting material is randomly distributed in the a-b plane of the superconducting layer.

3. The superconducting article of claim 1 , wherein the non-superconducting material distributed preferentially along the a-b plane coplanar with the

superconducting layer lacks a substantial vertically oriented component.

4. The superconducting article of claim 1 , wherein the non-superconducting material is comprised of nano-particulates.

5. The superconducting article of claim 1 , wherein the non-superconducting material is non-crystalline.

8. The superconducting article of claim 1 , wherein the non-superconducting material is comprised of RE2O3 where RE includes one or more of the following elements: Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu.

7. The superconducting article of claim 1 , wherein the non-superconducting material is comprised of BaM03 where M includes one or more of the following elements: Ti, Zr, Al, Hf, !r, Sn, Nb, Mo, Ta, Ce, and V.

8. The superconducting article of claim 1 , wherein the buffer layer and high-temperature superconducting layers are selected to ensure a lattice mismatch between the two layers.

9. A method of forming a high-temperature superconductor, the method comprising

providing a substrate;

depositing a buffer layer upon the substrate;

depositing a high-temperature superconducting layer upon the buffer layer; and

co-depositing a non-superconducting material distributed preferentially along the a-b plane coplanar with the superconducting layer, wherein the non-superconducting material is randomly distributed and lacks a substantial vertically oriented component.

10. The method of claim 9, wherein the non-superconducting material is comprised of RE2O3 where RE includes or more of the following elements: Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu.

1 1. The method of claim 9, wherein the non-superconducting material is comprised of BaMC where M includes one or more of the following elements: Ti, Zr, Al, Hf, ir, Sn, Nb, Mo, Ta, Ce, and V.

12. The method of claim 9, wherein the non-superconducting material is deposited by introducing an atomic excess of RE during co-deposition with the superconducting layer.

13. The method of claim 9, wherein the non-superconducting material is deposited by introducing an atomic excess of Ba and new element M where M includes one or more of the following elements: Ti, Zr, A!, Hf, Ir, Sn, Nb, Mo, Ta, Ce, and V during co-deposition with the superconducting layer.

14. The method of claim 9, wherein the buffer layer, high-temperature superconducting layer, and non-superconducting material are deposited by photo-assisted MOCVD (PAMOCVD).

15. The method of claim 14, further wherein the high-temperature

superconducting layer growth rate is 1.0 pm/min or greater.

18. A thin film composite high-temperature superconducting article comprising:

a substrate;

a buffer layer;

a high-temperature superconducting layer;

non-superconducting material distributed preferentially along the a-b plane coplanar with the superconducting layer; and

a lift factor at 4K, 20T (ic (4K, 20T)/!c (77K, self-field)) of 2 or greater.

17. The superconducting article of claim 16, wherein the non-superconducting material is randomly dispersed in the a-b plane of the superconducting layer.

18. The superconducting article of claim 16, wherein the non-superconducting material distributed preferentially along the a-b plane coplanar with the

superconducting layer lacks a substantial vertically oriented component

19. The superconducting article of claim 16, wherein the lift factor is 3 or greater.

20. The superconducting article of claim 16, wherein the superconductor further comprises a critical current (lc) of 450A/cm-width or higher at 4K and 20T.