Figure 5 Selected m.s.d.s (Å2) in mgt#2, Mn10 and natural magnetite #14 (Okudera et al., 1996) in heating cycle. Dashed lines in red and blue are linear regressions of observations. The thin black line starting from Bp-mgt#2 was drawn as 88.5% of the regression line for Bp-#14, and the line from Bp-Mn10 was its parallel translation.