Influence of an Anisotropic Crystalline Field on the Magnetic Properties of a Mixed Spin-1/2 and Spin-1 Ising Model
Strecka, Jozef · Jascur, Michal
Original · EN
The mixed spin-1/2 and spin-1 Ising model in the presence of an anisotropic crystalline field is treated exactly within the framework of an extended star-triangle mapping transformation. The exact results for the phase diagrams, magnetization, internal energy and specific heat are derived and discussed in detail. The relevant mapping suggests that an isotropic in-plane crystal field (Dˣ = Dʸ) leads to the same effects as the hard-axis crystal field (Dᶻ), whereas the in-plane anisotropy (Dˣ ≠ Dʸ) is responsible also for the randomization of the magnetic ordering (transverse-field like effect).
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