Figure 5From: Biomagnetic of Apatite-Coated Cobalt Ferrite: A Core–Shell Particle for Protein Adsorption and pH-Controlled ReleaseHysteresis loops obtained from a VSM measured operating at room temperature for CoFe 2 O 4 , and apatite (Ap)-coated citric acid–stabilized cobalt ferrite (CFCA-Ap) particles.Back to article page