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Mean-field Solution of the mixed spin-1 and spin-5/2Ising system with different single-ion anisotropies | ||
| Baghdad Science Journal | ||
| Article 1, Volume 6, Issue 4, 2009, Pages 784-789 | ||
| Author | ||
| Fuad. T. Ibrahim | ||
| Abstract | ||
| The mixed-spin ferrimagnetic Ising system consists of two-dimensional sublattices A and B with spin values and respectively .By used the mean-field approximation MFA of Ising model to find magnetism( ).In order to determined the best stabile magnetism , Gibbs free energy employ a variational method based on the Bogoliubov inequality .The ground-state (Phase diagram) structure of our system can easily be determined at , we find six phases with different spins values depend on the effect of a single-ion anisotropies .these lead to determined the second , first orders transition ,and the tricritical points as well as the compensation phenomenon . | ||
| Keywords | ||
| mixed; spin Ising model; ferrimagnet; Single; ion anisotropy; compensation point | ||
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