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Remanent magnetic flux distribution in superconducting-ferromagnetic layered heterostructures
Date
2019
Abstract
Stacks of superconducting tape, made of second-generation coated conductors, present an interesting alternative to bulk superconductors. The layered geometry allows incorporation of other functional, namely ferromagnetic, materials. The ferromagnetic material changes the field configuration within the superconductor and can be used to shape or divert the flux density from its interior. This can be used to optimise the remanent flux density after magnetisation. FEM simulations are employed to test the performance of a variety of superconductor/ferromagnet structures and explain the role of the ferromagnetic material in the composite structure. Cases where trapped field is much higher and lower than remanent magnetisation of the ferromagnetic material are considered, showing that performance can be enhanced or maintained by using ferromagnetic material while reducing the usage of costly superconducting tape.
Supervisor
Description
peer-reviewed
Publisher
Springer
Citation
Journal of Superconductivity and Novel Magnetism;
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Funding Information
EPSRC, European Research Council (ERC)