Mixed spin-1/2 and 3/2 Ising model with multi-spin interactions on a decorated square lattice

A mixed spin-1/2 and spin-3/2 Ising model on a decorated square lattice with a nearest-neighbor interaction, next-nearest-neighbor bilinear interaction, three-site four-spin interaction and single-ion anisotropy is exactly investigated using a generalized decoration-iteration transformation, Callen-...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 442; pp. 364 - 370
Main Authors Štubňa, V., Jaščur, M.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.11.2017
Elsevier BV
Subjects
Anisotropy
Decorated lattice
Decoration
Differential equations
Entropy
Exact results
Free energy
Ising model
Iterative methods
Magnetism
Many-body interactions
Mathematical analysis
Mixed-spin Ising model
Operators (mathematics)
Phase transitions
Decorated lattice
Exact results
Many-body interactions
Phase transitions
Mixed-spin Ising model
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Summary:A mixed spin-1/2 and spin-3/2 Ising model on a decorated square lattice with a nearest-neighbor interaction, next-nearest-neighbor bilinear interaction, three-site four-spin interaction and single-ion anisotropy is exactly investigated using a generalized decoration-iteration transformation, Callen-Suzuki identity and differential operator technique. The ground-state and finite-temperature phase boundaries are obtained by identifying all relevant phases corresponding to minimum internal or free energy of the system. The thermal dependencies of magnetization, correlation functions, entropy and specific heat are also calculated exactly and the most interesting cases are discussed in detail.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2017.07.011