US 12,144,266 B1
Superconductor synthesis method
Yassine Slimani, Dammam (SA); Munirah Abdullah Almessiere, Dammam (SA); and Faten Ben Azzouz, Dammam (SA)
Assigned to Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed by Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed on Jul. 23, 2024, as Appl. No. 18/780,582.
Application 17/320,660 is a division of application No. 16/161,430, filed on Oct. 16, 2018, granted, now 11,107,967, issued on Aug. 31, 2021.
Application 18/780,582 is a continuation of application No. 18/600,835, filed on Mar. 11, 2024, granted, now 12,089,510.
Application 18/600,835 is a continuation of application No. 18/364,497, filed on Aug. 3, 2023, granted, now 12,069,968.
Application 18/364,497 is a continuation of application No. 17/320,660, filed on May 14, 2021, granted, now 11,770,983, issued on Sep. 26, 2023.
This patent is subject to a terminal disclaimer.
Int. Cl. H10N 60/85 (2023.01); H10N 60/01 (2023.01); H10N 60/20 (2023.01)
CPC H10N 60/857 (2023.02) [H10N 60/0268 (2023.02); H10N 60/203 (2023.02)] 11 Claims
OG exemplary drawing
 
1. 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.