Thermodynamic model of a solid with RKKY interaction and magnetoelastic coupling
arXiv:1711.09152 · doi:10.1016/j.jmmm.2017.12.088
Abstract
Thermodynamic description of a model system with magnetoelastic coupling is presented. The elastic, vibrational, electronic and magnetic energy contributions are taken into account. The long-range RKKY interaction is considered together with the nearest-neighbour direct exchange. The generalized Gibbs potential and the set of equations of state are derived, from which all thermodynamic functions are self-consistently obtained. Thermodynamic properties are calculated numerically for FCC structure for arbitrary external pressure, magnetic field and temperature, and widely discussed. In particular, for some parameters of interaction potential and electron concentration corresponding to antiferromagnetic phase, the existence of negative thermal expansion coefficient is predicted.
References in corpus (17)
- Piezomagnetic effect as a counterpart of negative thermal expansion in magnetically frustrated Mn-based antiperovskite nitrides
- Exchange interactions in europium monochalcogenide magnetic semiconductors and their dependence on hydrostatic strain
- General Microscopic Model of Magnetoelastic Coupling from First-Principles
- Pressure Induced Quantum Phase Transitions
- Hydrostatic pressure study of paramagnetic-ferromagnetic phase transition in (Ga,Mn)As
- Magnetic inhomogeneity on a triangular lattice: the magnetic-exchange versus the elastic energy and the role of disorder
- (Ga,Mn)As under pressure: a first-principles investigation
- Critical behavior of the three-dimensional compressible Ising antiferroma gnet at constant volume: a Monte Carlo study
- Thermodynamic model of a solid with RKKY interaction and magnetoelastic coupling
- Ehrenfest relations and magnetoelastic effects in field-induced ordered phases
- The influence of structural short-range order on the phase diagrams of diluted FCC magnet with arbitrary spin and modified RKKY interaction
- Self-consistent model of a solid for the description of lattice and magnetic properties
- Spin-phonon coupling induced frustration in the exactly solved spin-1/2 Ising model on a decorated planar lattice
- A self-consistent thermodynamic model of metallic systems. Application for the description of gold
- Thermodynamics of a model solid with magnetoelastic coupling
- Compressible Sherrington-Kirkpatrick spin-glass model
- Spontaneous distortion in the spin-1/2 Ising-Heisenberg model on decorated planar lattices with a magnetoelastic coupling
Cited by in corpus (5)
- Absence of a spontaneous long-range order in a mixed spin-(1/2, 3/2) Ising model on a decorated square lattice due to anomalous spin frustration driven by a magnetoelastic coupling
- Thermodynamic model of a solid with RKKY interaction and magnetoelastic coupling
- Thermodynamic properties of the one-dimensional Ising model with magnetoelastic interaction
- Anomalous spin frustration enforced by a magnetoelastic coupling in the mixed-spin Ising model on decorated planar lattices
- Hubbard pair cluster with elastic interactions. Studies of thermal expansion, magnetostriction and electrostriction