Influence of an Anisotropic Crystalline Field on the Magnetic Properties of a Mixed Spin-1/2 and Spin-1 Ising Model

Details Influence of an Anisotropic Crystalline Field on the Magnetic Properties of a Mixed Spin-1/2 and Spin-1 Ising Model Influence of an Anisotropic Crystalline Field on the Magnetic Properties of a Mixed Spin-1/2 and Spin-1 Ising Model

2002-07-22

arxiv.org/abs/cond-mat/0207519v1

Acta Electrotechnica et Informatica 2 (2002) 102-106

Physics

Condensed Matter

Statistical Mechanics

5 pages, 5 Figures, to be published in Acta Electronica et Informatica (2002)

Scientific paper

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 (D^x = D^y) leads to the same effects as the hard-axis crystal field (D^z), whereas the in-plane anisotropy (D^x \neq D^y) is responsible also for the randomization of the magnetic ordering (transverse-field like effect).

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