Article ID Journal Published Year Pages File Type
1596285 Solid State Communications 2007 6 Pages PDF
Abstract
Within the effective field theory (EFT), the critical properties of the biaxial Ising model with both longitudinal crystal field and transverse dilution crystal field are investigated for a simple cubic lattice. The tricritical point (TCP) and its trajectory are discussed in T-Dx and T-Dz space. A new phenomenon of two TCPs is found in T-Dx space. There exists a second-order line between two first-order lines, separated by two TCPs. The change of dilution concentration leads to a complex relation of the trajectory of the TCP. The degenerate patterns at the ground state appear by changing the longitudinal crystal field. The range of the ordered phase for transition lines labelled as a positive or (negative) value of Dx/J becomes larger or (smaller) with the decrease of tx in T-Dz space. Some results have not been revealed in previous works.
Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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