The Size and Shape Dependence of Ferromagnetism in Nanomagnets

Table 2

The various chain-shaped and oblong-shaped spin arrays, their ratio of length to width 𝜂, the coercive field at 𝑇=25𝐾, and standard deviations of the coercive field.

𝐿𝑥×𝐿𝑦	𝜂	𝐻𝑐(𝑇)	Standard deviation (T)
40×1	40	0	0
20×2	10	2.05745	0.15
10×4	2.5	15.27256	0.6
8×5	1.6	16.06252	0.3788
60×1	60	0	0
30×2	15	2.97262	0.5
20×3	6.666	10.76375	0.7
15×4	3.75	15.17215	0.6
12×5	2.4	15.97444	0.6884
10×6	1.6667	15.61092	0.745
80×1	80	0	0
40×2	20	3.16916	0.88
20×4	5	15.40603	0.8985
16×5	3.2	16.61719	0.9339
10×8	1.25	15.46548	0.7772
120×1	120	0	0
60×2	30	3.68	0.8
40×3	13.33	10.1	0.8
30×4	7.5	16.1	0.9
24×5	4.8	17.1	0.95
20×6	3.33	16.05	0.6
15×8	1.875	15.46	0.9
12×10	1.2	15.49	0.85