Effect of magnetization process on levitation force between a superconducting disk and a permanent magnet

TL;DR

This study investigates how different magnetization processes affect the levitation force between a superconducting disk and a permanent magnet, combining experimental measurements with theoretical modeling.

Contribution

It demonstrates the significant impact of magnetization processes on levitation force and validates a theoretical model with experimental data.

Findings

Magnetization process significantly influences levitation force.

Theoretical calculations align well with experimental results.

Heat dissipation due to flux motion is crucial in modeling.

Abstract

The levitation forces between a permanent magnet and a coaxial superconducting disk after different magnetization processes are measured. Significant effect of the magnetization process on the levitation force is observed. Theoretical calculations of levitation force based on the critical state model with temperature and field-dependent critical current density, and the heat dissipation due to the flux motion are in perfect agreement with the experimental data.