Anisotropic compressible Ising model for quasi-one-dimensional hydrogen-bonded ferroelectrics
作者： J.A. Plascak , F.C. SáBarreto , S.R. Salinas
DOI: 10.1016/0038-1098(82)90965-6
关键词: Ising model 、 Ferroelectricity 、 Triple point 、 Anisotropy 、 Hamiltonian (quantum mechanics) 、 Phase diagram 、 Condensed matter physics 、 Mean field theory 、 Square-lattice Ising model 、 Physics
摘要: Abstract A compressible pseudo-spin Ising model hamiltonian is used to calculate the pressure-temperature phase diagram of quasi-one-dimensional hydrogen-bonded ferroelectric crystals such as CsD 2 PO 4 . We assume strong effective interactions, which are treated exactly, along chains, and weak volume dependent in mean field approximation, between chains. In agreement with experimental findings, exhibits a triple point transition lines ferroelectric, antiferroelectric, paraelectric phases. However, results suggest that may be too simple account for detailed form
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