Figure 4. Results obtained from measurement of chain IV in Fig. 3.
(a) Estimated magnetic moment distribution, (b) radial-angular (r,Δθ) distribution function, where r is distance between two magnetic moments (particle centers) and Δθ is the angular difference in their moment orientations, measured for all pairs of moments in the chain. The thin green circular lines superimposed on (b) indicate the expected locations of the first few neighbouring peaks for a 2D close-packed lattice with a measured nearest neighbour distance dnn of 19.8 nm.