Magnetic armour has different combat and radiation problems

What would happen if armour were magnetised or polarised?

Repeated polarisation might create materials problems, while magnetic fields may be more promising for radiation protection than as a universal answer to weapons.

Aligned dipoles might strengthen a fictional material's structure, though repeated energising and de-energising could leave it brittle. A magnetic field has a clearer possible role in managing charged space radiation, which is a major constraint for crewed travel. Any such protection would still need to account for plasma effects and failure modes. Fictional armour therefore remains separate from the practical problem of providing storm shelter and radiation protection for a spacecraft crew.