High temperature superconducting material and a method for production
AssigneeTrue 2 Materials Pte Ltd.
InventorsWilliam Rieken, Atit Bhargava
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Abstract
A process for producing a process for producing a LnM2Cu3Ox high-temperature superconductive powder, the process comprising: i) providing an aqueous solution of Ln, M and Cu and at least one mineral acid; ii) adding at least one sequestrating agent and, optionally, at least one dispersant to the solution to form a precipitate; iii) recovering the precipitate from the solution; and iv) heating the precipitate in a flow of oxygen to form the LnM2Cu3Ox powder, wherein Ln is a rare earth element, preferably Y, Ce, Dy, Er, Gd, La, Nd, Pr, Sm, Sc, Yb, or a mixture of two or more thereof, and wherein M is selected from Ca, Sr, and Ba.
Claims5
A process for producing a LnM2-yXyCu3Ox and/or Ln2M2-yXyCuOx high-temperature superconductive powder, the process comprising:
- i) providing an aqueous solution of Ln, M, X and Cu and at least one mineral acid;
- ii) adding at least one sequestrating agent and, optionally, at least one dispersant to the solution to form a precipitate;
- iii) recovering the precipitate from the solution;
- and
- iv) heating the precipitate in a flow of oxygen to form the LnM2-yXyCu3Ox and/or Ln2M2-yXyCuOx powder,
- wherein X is selected from the group consisting of Mg, Se, Sr, Ca and mixtures of two or more thereof,
- wherein Ln is a rare earth element, preferably Y, Ce, Dy, Er, Gd, La, Nd, Pr, Sm, Sc, Yb, or a mixture of two or more thereof,
- wherein M is selected from Ca, Sr, and Ba;
- and
- wherein y is from 0.1 to 0.8.
Dependencies are inferred from the claim text.