Minute doping for YBCO flux pinning
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsPaul N. Barnes, Joseph W. Kell, Timothy J. Haugan
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Abstract
A method for enhancing the flux pinning of a YBCO superconductor by substituting minute quantities of rare earth elements (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) or other deleterious elements (Sc, etc.) for Y in YBCO thin films is described. The method of the present invention enables enhanced flux pinning of the material while not significantly increasing the cost of the HIS material and can be used in all HTS deposition methods since it is not process dependent.
Claims12
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a deleterious element to produce Y1-xMxBa2Cu3O7-z, wherein x is less than or equal to about 0.01;
- and
- depositing said Y1-xMxBa2Cu3O7-z, from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 2000% at 77K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a deleterious element to produce Y1-xMxBa2Cu3O7-z, wherein x is less than or equal to about 0.01.;
- and
- depositing said Y1-xMxBa2Cu3O7-z, from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 200% at 65K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a rare earth element to produce Y1-xMxBa2Cu3O7-z wherein x is less than or equal to about 0.01;
- and
- depositing said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 2000% at 77K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a rare earth element to produce Y1-xMxBazCu3O7-z wherein x is less than or equal to about 0.01;
- and
- depositing said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 200% at 65K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a rare earth element to produce Y1-xMxBa2Cu3O7-z wherein x is less than or equal to about 0.01;
- and
- depositing, by pulsed laser deposition, said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 2000% at 77K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a rare earth clement to produce Y1-xMxBa2Cu3O7-z wherein x is less than or equal to about 0.01;
- and
- depositing, by pulsed laser deposition, said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 200% at 65K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a deleterious element to produce Y1-xMxBa2Cu3O7-z wherein x is less than or equal to about 0.01;
- and
- depositing, by pulsed laser deposition, said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 2000% at 77K.
A method for enhancing the flux pinning of a YBCO superconductor comprising the steps of:
- preparing a quantity of precursor YBCO material;
- doping said YBCO material with a deleterious element to produce Y1-xMxBa2Cu3O7-x wherein x is less than or equal to about 0.01;
- and
- depositing, by pulsed laser deposition, said Y1-xMxBa2Cu3O7-z from said doping step above onto a substrate, wherein current densities of said YBCO superconductor exceed those of said precursor YBCO material by up to 200% at 65K.
Dependencies are inferred from the claim text.