Figure 1From: An efficient magnetically modified microbial cell biocomposite for carbazole biodegradationThe nature of Fe 3 O 4 nanoparticles. A is the TEM image of Fe3O4 (magnification × 100,000); B is the magnetic curve for Fe3O4 nanoparticles. (σs, saturation magnetization; emu, electromagnetic unit; Oe, Oersted).Back to article page