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VOLUME 92 (2010) | ISSUE 4 |
PAGE 242
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Compensation temperatures, magnetic susceptibilities and phase diagrams of a mixed ferrimagnetic ternary system on the Bethe lattice
B. Deviren+*, M. Keskin∇, Y. Aydin
+Institute of Science, Erciyes University, 38039 Kayseri, Turkey *Department of Physics, Nevsehir University, 50300 Nevsehir, Turkey ∇Department of Physics, Erciyes University, 38039 Kayseri, Turkey Institute of Science, Nevsehir University, 50300 Nevsehir, Turkey
Abstract
Compensation behaviors, magnetic susceptibilities and the phase
diagrams of the ternary system of the type ABC consisting of Ising spins
σ = 1/2, S = 3/2 and m = 5/2 in the
presence of a single-ion anisotropy are studied on the Bethe lattice within
the framework of the exact recursion relations. Both ferromagnetic and
antiferromagnetic exchange interactions are considered. The exact expressions
for sublattice magnetizations and magnetic susceptibilities are obtained, and
then thermal behaviors of the sublattice magnetizations, total magnetization,
magnetic sublattice susceptibilities and total susceptibility are
investigated. We find that the system only undergoes a second order phase
transition for the different and same bilinear nearest-neighbor exchange
interaction parameters, but displays compensation behaviors for only
different bilinear interaction parameters. We also present the phase diagrams
for the different and same bilinear nearest-neighbor exchange interaction
parameters. A comparison is made with the other ternary system of the type
ABC consisting of different spin values.
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