Superconductor synthesis method

Superconductor synthesis method a, comprising:

• mixing Y2O3, BaCO3, and CuO powders and pelletizing to form a pelletized mixture;
• calcining the pelletized mixture comprising the Y2O3, BaO and CuO in molar ratios of 1 (Y):1.9 to 2.1 (Ba):2.9 to 3.1 (Cu) to a temperature in a range of from 850 to 1050° C. for a time in a range of from 8 to 16 hours, to obtain a Y-123, wherein the Y2O3, BaO and CuO are free of chelating ligands;
• grinding a precursor mixture comprising the Y-123 and 0.01 to 3.0 wt. %, relative to total mass of the precursor mixture, of nano-structured WO3 to form a superconductor precursor;
• pressing the superconductor precursor at a pressure in a range of from 500 to 1000 MPa into a pre-sintered precursor;
• sintering the pre-sintered precursor at a temperature in a range of from 900 to 1000° C. for a period in a range of from 4 to 12 hours, to obtain a sintered product, wherein the heating, grinding, pressing and sintering are carried out in the absence of a solvent;
• and
• cooling the sintered product at a rate in a range of from 1 to 10° C./minute to obtain a YBCO superconducting material;
• wherein the YBCO superconducting material, comprises:
• a YBa2Cu3O7-δ matrix phase;
• and
• 0.05 to 0.2 wt. %, based on total superconductor weight, of particles of a dopant,
• wherein the dopant is the nano-structured WO3 in the form of WO3 nanowires and
• wherein the WO3 nanowires are disposed within voids between grain boundaries of the YBa2Cu3O7-δ matrix phase.