Representative iron oxides obtained through co-precipitation procedures.

Compound/property	Particle size (nm)	Morphology	Magnetization (emu g−1)	Ref.
Ferumoxytol	7.1	Spherical	104–105	52
Temperature-dependent particles	11.22	Spherical	64–72	53
(Zn–Mn)-co-doped	10–13	Spherical	81	54