Figure 2.

Magnetic properties of magnetosomes produced by AMB-1 cells within the Co(0) (a–c), Co(2.1) (d–f) and Co(12.1) (g–i) cultures. (a,d,g) Room-temperature, first-order reversal curves (FORCs) diagrams; (b,e,h) thermal decays of saturation remanence magnetization imparted at 2.5 T at 10 K after cooling the sample from 300 to 10 K in a 2.5 T field (FC) and zero field (ZFC); (c,f,i) hysteresis loop measured at temperatures 5, 100, 200 and 300 K. Note that the x-axes scales of (c), (f) and (i) are different.