Fig. 9. (a and b) X-ray diffraction and Raman spectra respectively of h-BN sheets as received, magnetite (in the absence of h-BN),²⁶ and h-BN@magnetite. (c) Magnetization saturation for h-BN@magnetite. (d) Low-field interval of the magnetization curves of h-BN@magnetite; laser operating at 1064 nm and 360 mJ, rotational speed 7.5k rpm, and flow rate of h-BN disperse in water (0.1 mg mL⁻¹) at 1 mL min⁻¹.