Magnetic properties of a mixed spin-12 and spin-32 Ising model with an uniaxial and biaxial crystal-field potential

Michal Jaščur and Jozef Strečka

Physica A: Statistical Mechanics and its Applications, 2005, vol. 358, issue 2, 393-412

Abstract: Magnetic properties of a mixed spin-12 and spin-32 Ising model on honeycomb lattice are investigated within the framework of an exact star-triangle mapping transformation. The particular attention is focused on the effect of uniaxial and biaxial crystal-field potentials that basically influence a magnetic behavior of the spin-32 atoms. Our results for basic thermodynamic quantities as well as dynamical time-dependent autocorrelation function indicate a spin tunneling between |±32〉 and |∓12〉 states in two different magnetically ordered phases OP1 and OP2, respectively.

Keywords: Uniaxial and biaxial crystal-field potential; Star-triangle transformation; Spin dynamics; Exact solution (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:358:y:2005:i:2:p:393-412

DOI: 10.1016/j.physa.2005.07.010

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