Figure 3From: Biomagnetic of Apatite-Coated Cobalt Ferrite: A Core–Shell Particle for Protein Adsorption and pH-Controlled ReleaseThe XRD pattern of CoFe 2 O 4 (CF) (a), apatite (Ap)-coated CFCA particles (CFCA-Ap) (b), and FTIR spectra of CFCA-Ap particles (c). Filled circle, hydroxyapatite phase and F, ferrite phase.Back to article page