Zi-Hua Xin

Magnetic properties of a mixed spin-12 and spin-32 transverse Ising model with a crystal field

The mixed spin-12 and spin-32 transverse Ising model with a crystal field is studied within the framework of the effective-field theory with correlations. The phase diagrams and thermal behaviors of magnetizations are investigated numerically for the honeycomb (z=3). The results show that there is no tricritical point for the system.

Transverse Ising Model with a Crystal Field for the Spin‐2

The properties of the spin-2 transverse Ising model with a crystal field are studied by using the effective-field theory with correlations. A new method is developed to investigate the model with spin >1. The phase diagrams, magnetization curves, internal energy and specific heat are investigated numerically for the honeycomb lattice.

Magnetic properties of ground state in diluted mixed-spin Ising ferrimagnetic systems

The magnetic properties of the ground state in diluted mixed spin-1/2-spin-1 Ising ferrimagnetic (J < 0) systems with a negative crystal-field (D < 0) interaction are studied by using the effective-field theory with correlations. The effects of diluting z = 3 and 4 systems are given in phase diagram and magnetization curves. For the z = 4 system both the second-order and the first-order phase transitions exist and for z = 3 system only second-order phase transition exists

Phase diagrams and tricritical behavior of spin-2 ising model with a transverse crystal field

Within the framework of the effective-field theory with correlations, the ferromagnetic spin-2 Ising model with a transverse crystal field on honeycomb, square and simple cubic lattices is studied. We have investigated the effect of the transverse crystal field on the phase diagrams, magnetization, quadrupolar moments, internal energy and specific heat of the system. The tricritical phenomena have been observed in our system.

Effect of a crystal field on phase transitions in a spin-3/2 transverse Ising model

Abstract The spin- 3 2 transverse Ising model with the presence of a crystal field is studied within the framework of the effective-field theory with correlations. The phase diagrams are investigated numerically for the honeycomb (z=3), square (z=4) and simple cubic (z=6) lattices.

Phase diagrams and tricritical behavior in a spin-2 transverse Ising model with a crystal field on honeycomb lattice

Within the effective-field theory with correlations, general expressions for evaluating the second-order phase transition line and tricritical point of the spin-2 transverse Ising model with the presence of a crystal field are obtained, The phase diagrams and the behavior of the tricritical point are studied numerically for the honeycomb lattice (z = 3)

Magnetic properties of transverse ferrimagnetic Ising model

The magnetic properties of a mixed Ising ferrimagnetic system consisting of spin-1 and spin-3/2 are examined using effective-field theory. The phase diagram for the honeycomb lattice is obtained. Comparing with the results of the system consisting of spin-1/2 and spin-1, the critical transition temperature T-c and critical transverse held Omega(c) become higher.