Phase diagrams and tricritical behavior of a diluted spin-1 transverse Ising model in a random field

The transverse spin-1 Ising model with random interactions

“…In addition to the study of the pure systems, site-diluted systems [17][18][19], random bond models [17,18,20], amorphous magnets [21], semi-infinite systems with a variety of surfaces [22][23][24][25], thin films [26,27], superlattices [28], and multilayers [29] have been studied. The effective field theory has also been extended to the spin-1 system [30][31][32][33][34] and to the mixed spin-1 2 and spin-1 systems [35][36][37][38]. Elkouraychi et al [39] have studied the transverse Ising model with an arbitrary spin within the framework of an effective field theory based on the use of approximate Van der Wearden identities.…”

The study of the phase diagram and internal energy of the mixed spin‐3/2 and spin‐5/2 ferrimagnetic Ising system with interlayer coupling by effective‐field theory; a simple approach of calculating internal energy

“…The corresponding theoretical work, with the mixed spin-1 and spin-2 Ising model, had been done by Zhang et al [18]. In this paper, we study the properties of two half-integer spins system, the mixed spin-3/2 and spin-5/2 Ising model of the same lattice structure as AFe II Fe III (C 2 O 4 ) 3 , to clarify the phase diagrams of it by using the EFT with correlations.…”

Magnetic properties of a transverse spin‐$ {3 \over 2} $ Ising model with random longitudinal field

“…Moreover, the tricritical point disappears at a certain critical transverse field Ω t before the ferromagnetic order is broken. While for the spin- 1 2 [19] and spin-1 [34] transverse Ising model in the longitudinal random-field we show that the systems do not exhibit the tricritical behavior in the phase diagram for the honeycomb lattice. On the other hand, the phase boundary line separating the ferromagnetic and paramagnetic phases also shrinks with increasing .…”