Figure 4

Magnetic properties of the Fe₃O₄/CG nanocomposites.

a Digital photos of the Fe₃O₄/CG nanocomposite suspension with and without an exterior magnetic field. b magnetic hysteresis curve of the Fe₃O₄ and Fe₃O₄/CG nanomaterials. c T₂ weighted MRI images of the CG and Fe₃O₄/CG nanomaterials.