Abstract
The Ising model on a square lattice with arbitrary number of decorating spins, considering both the interactions between nodal and decorating spins is examined. A plethora of peculiarities such as heat capacity splitting, generation and suppression of multiple phase transitions and several kinds of partial ordering are thoroughly scrutinized. A rigorous analytical expression for the partition function closely resembling the one obtained by Onsager is presented.
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Funding
The research was carried out within the state assignment of Minobrnauki of Russia (theme “Quantum” no. AAAA-A18-118020190095-4), supported in part by Ural Branch of the Russian Academy of Sciences (project no. 18-2-2-11).
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Proshkin, A.I., Kassan-Ogly, F.A. Frustration and Phase Transitions in Ising Model on Decorated Square Lattice. Phys. Metals Metallogr. 120, 1366–1372 (2019). https://doi.org/10.1134/S0031918X19130234
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DOI: https://doi.org/10.1134/S0031918X19130234