Sonochemical Modification of the Superconducting Properties of MgB2
Tanya Prozorov, Ruslan Prozorov, Alexey Snezhko, Kenneth S. Suslick
TL;DR
This study demonstrates that ultrasonic treatment of MgB2 with embedded magnetic nanoparticles enhances vortex pinning and magnetic properties, potentially improving superconductor performance.
Contribution
It introduces a sonochemical method to modify MgB2 with magnetic nanoparticles, enhancing its superconducting and magnetic characteristics.
Findings
Increased magnetic hysteresis in MgB2 after sonication.
Embedded Fe2O3 nanoparticles improve vortex pinning.
Ultrasonic treatment induces inter-grain fusion.
Abstract
Ultrasonic irradiation of magnesium diboride slurries in decalin produces material with significant inter-grain fusion. Sonication in the presence of Fe(CO)5 produces magnetic Fe2O3 nanoparticles embedded in the MgB2 bulk. The resulting superconductor-ferromagnet composite exhibits considerable enhancement of the magnetic hysteresis, which implies an increase of vortex pinning strength due to embedded magnetic nanoparticles.
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