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Figure 1: Possible magnetic structures in a 0.2 m particle [after Newell et al., 1993]: (a) vortex structure, (b) diagonal structure.

 
Figure 2: Normalized remanence as a function of particle size for the vortex and diagonal states shown in Figure 1 [after Newell et al., 1993].

 
Figure 3: Domain multiplicity distribution for a single grain given repeated TRMs under identical conditions. Lined regions indicate the presence of at least one large domain [after Halgedahl, 1991].