Abstract
We consider Ising ferromagnets on random subgraphs of the square lattice. These are obtained by independent random selections either of sites or of bonds. We assume that for each site (or, respectively, bond) the probability of being selected exceeds the critical percolation probability. Then, at sufficiently low temperatures and zero external field, spontaneous magnetization occurs. Some further related results are obtained.
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Georgii, HO. Spontaneous magnetization of randomly dilute ferromagnets. J Stat Phys 25, 369–396 (1981). https://doi.org/10.1007/BF01010795
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DOI: https://doi.org/10.1007/BF01010795