Figure 4
From: Synthesis and magnetic properties of single-crystalline Na2- x Mn8O16 nanorods
Magnetization as a function of magnetic field at 5 K for Na 2-x Mn 8 O 16 nanorods. (a) after ZFC process; (b) after FC process with an applied magnetic field of 5 T. The inset in the lower right corner of (a) and (b) shows the magnified part of the corresponding loop in the low field ranges. The inset in the upper left corner of (b) shows the high field irreversibility of magnetization on the right-hand side.