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
  Magnetic properties of a mixed spin-1/2 and spin-1 Ising model on honeycomb lattice are exactly investigated within the framework of generalized star-triangle mapping transformation. The particular attention is focused on the effect of uniaxial and biaxial crystal-field anisotropies that basically influence the magnetic behaviour of the spin-1 atoms. Our results for the basic thermodynamic quantities, as well as the dynamical time-dependent autocorrelation function indicate the spin tunneling between the $| +1>$ and $| - 1>$ states in the magnetically ordered phase. 
Jozef Strecka and Michal Jascur