Unlike the coercive field
Hc of a bulk ferrimagnet, which diverges at the compensation temperature
Tcomp, the coercive field of a polycrystalline ferrimagnet with uni-axial anisotropy is shown to have a minimum at
Tcomp. Despite this behavior, the field required for domain-wall motion still diverges at the compensation temperature. These ideas are used to treat a ferrimagnetic class of molecule-based magnets, the bimetallic oxalates, that exhibit a minimum coercivity at
Tcomp.