Journal of Nanomaterials

Research Article

The Size and Shape Dependence of Ferromagnetism in Nanomagnets

Figure 3

The 𝑍 e ff dependence of the coercive field for the bulk-shaped system of 𝐿 𝑥 × 𝐿 𝑦 × 𝐿 𝑧 = 3 0 × 2 × 2 , 2 0 × 3 × 2 , 1 5 × 4 × 2 , 5 × 1 2 × 2 , 6 × 1 0 × 2 , 1 0 × 4 × 3 , 5 × 8 × 3 , 5 × 4 × 6 with 𝐽 = 7 meV and 𝐽 = 3 meV at 𝑇 = 2 5 K. The solid lines are fits to data by (4), as discussed in the text.
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