Magnetic and magnetocaloric properties of the exactly solvable mixed-spin Ising model on a decorated triangular lattice in a magnetic field

Abstract

The ground state, zero-temperature magnetization process, critical behaviour and isothermal entropy change of the mixed-spin Ising model on a decorated triangular lattice in a magnetic field are exactly studied after performing the generalized decoration-iteration mapping transformation. It is shown that both the inverse and conventional magnetocaloric effect can be found near the absolute zero temperature. The former phenomenon can be found in a vicinity of the discontinuous phase transitions and their crossing, while the latter one occurs in some paramagnetic phases due to a spin frustration to be present at zero magnetic field. The inverse magnetocaloric effect can also be detected slightly above continuous phase transitions following the power-law dependence $|-\Delta {\mathcal{S}}_{iso}^{min}|\propto h^n$, where $n$ depends basically on the ground-state spin ordering.

11 pages, 9 figures

References in corpus (10)

• Exact results of a mixed spin-1/2 and spin-S Ising model on a bathroom tile (4-8) lattice: effect of uniaxial single-ion anisotropy
• Reentrant phase transitions and multicompensation points in the mixed-spin Ising ferrimagnet on a decorated Bethe lattice
• Multicritical Point Relations in Three Dual Pairs of Hierarchical-Lattice Ising Spin-Glasses
• Magnetic properties of a mixed spin-1/2 and spin-3/2 Ising model with an uniaxial and biaxial crystal-field potential
• Exact solution of the mixed-spin Ising model on a decorated square lattice with two different kinds of decorating spins on horizontal and vertical bonds
• Reentrance of disorder in the anisotropic shuriken Ising model
• Soluble kagome Ising model in a magnetic field
• Exact results of the mixed-spin Ising model on a decorated square lattice with two different decorating spins of integer magnitudes
• Reentrant phenomenon and inverse magnetocaloric effect in a generalized spin-(1/2,s) Fisher's super-exchange antiferromagnet
• Inverse magnetocaloric effect in the spin-1/2 Fisher's super-exchange antiferromagnet

Cited by in corpus (6)

• Magnetic properties and phase diagrams of mixed spin-1 and spin-1/2 Ising model on a checkerboard square structure: A Monte Carlo study
• Magnetic properties and phase diagrams of the ferrimagnetic triangular nanotube with core-shell structure: A Monte Carlo study
• Ground state and thermodynamic properties of spin-1/2 isosceles Heisenberg triangles for V${}_6$-like magnetic molecules
• Effect of crystal field and external magnetic field on the magnetic and thermodynamic properties of the Ising mixed spin (1-1/2-1) three layers system of cubic structure
• Enhanced magnetocaloric effect in a mixed spin-(1/2, 1) Ising-Heisenberg two-leg ladder with strong-rung interaction
• The specific heat and magnetic properties of a spin-1/2 ladder including butterfly-shaped unit blocks