Oxide‐Dispersion‐Driven Enhancement of Superconducting Performance of Mechanically Alloyed Nb3Sn Bulk via Co‐Doping with Y2O3 and TiO2
Year: 2025
Type: article
Abstract: This study attempts to utilize the oxide dopants as dispersoids for Nb3Sn superconducting bulk prepared through the mechanical alloying route. The functional behavior is characterized by the generation of artificial flux pinning centers (APCs) through cost‐effective nano oxide dispersoids. Further attempt is made to dope Y2O3 and TiO2 simultaneously in Nb3Sn. An influence of extended pinning is observed in this synergic‐doped sample due to combined pinning provided by magnetic κ TiO2 pins and nonmagnetic Y2O3 APCs. Furthermore, an increase in the critical temperature, Tc by 2 K has been achieved for the co‐doped Nb3Sn samples and 1 K each by individually doped samples with reference to pristine Nb3Sn. At 2 T, the Jc for a co‐doped sample is 58% higher than the reference pristine Nb3Sn, while Y2O3 doped shows 13% higher and TiO2 doped shows 28% lower Jc than the reference. A comparable irreversibility field, Birr values are evaluated using both the Jc extrapolation method and Kramer's plot.
Source: Advanced Engineering Materials
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409570860