https://phys.org/news/2021-02-magnetic-graphene-kind-magnetism.html
Hate to burst your ferrous bubble FRiend.
I guess you didn’t read your own link—that’s a specially constructed ferrous graphene, not the graphene normally used as an adjuvant in vaccines.
It’s not the carbon graphene, it is an iron-containing compound (along with phosphorus and sulfur):
“The researchers, led by the University of Cambridge, were able to control the conductivity and magnetism of iron thiophosphate (FePS3), a two-dimensional material which undergoes a transition from an insulator to a metal when compressed.”
If FePS3 were in the vaccine, and in the correct compressed state, there would be magnetic properties.