Effect of uniaxial and biaxial crystal-field potential on magnetic properties of a mixed spin-1/2 and spin-1 Ising model on honeycomb lattice

摘要

Magnetic properties of a mixed spin-1/2 and spin-1 Ising model on honeycomblattice are exactly investigated within the framework of generalizedstar-triangle mapping transformation. The particular attention is focused onthe effect of uniaxial and biaxial crystal-field anisotropies that basicallyinfluence the magnetic behaviour of the spin-1 atoms. Our results for the basicthermodynamic quantities, as well as the dynamical time-dependentautocorrelation function indicate the spin tunneling between the $| +1>$ and $|- 1>$ states in the magnetically ordered phase.