Thermodynamics of Ferrotoroidic Materials: Toroidocaloric Effect

Abstract

The three primary ferroics, namely ferromagnets, ferroelectrics and ferroelastics exhibit corresponding large (or even giant) magnetocaloric,electrocaloric and elastocaloric effects when a phase transition is induced by the application of an appropriate external field. Recently the suite of primary ferroics has been extended to include ferrotoroidic materials in which there is an ordering of toroidic moments in the form of magnetic vortex-like structures, examples being LiCo(PO_4)_3 and Ba_2CoGe_2O_7. In the present work we formulate the thermodynamics of ferrotoroidic materials. Within a Landau free energy framework we calculate the toroidocaloric effect by quantifying isothermal entropy change (or adiabatic temperature change) in the presence of an applied toroidic field when usual magnetization and polarization may also be present simultaneously. We also obtain a nonlinear Clausius-Clapeyron relation for phase coexistence.

10 pages, 5 Figures

References in corpus (9)

• Giant electrocaloric effect in thin film Pb Zr_0.95 Ti_0.05 O_3
• Elastocaloric effect associated with the martensitic transition in shape-memory alloys
• Space-Time Parity Violation and Magnetoelectric Interactions in Antiferromagnets
• Towards a microscopic theory of toroidal moments in bulk periodic crystals
• Ferroelectricity induced by spin-dependent metal-ligand hybridization in Ba${}_2$CoGe${}_2$O${}_7$
• Toroidal metamaterial
• Magnetoelectric MnPS3 thiophosphate as a new candidate for ferrotoroidicity
• Ferrotoroidic Moment as a Quantum Geometric Phase
• A System Exhibiting Toroidal Order

Cited by in corpus (6)

• Skyrmions in Chiral Magnets with Rashba and Dresselhaus Spin-Orbit Coupling
• Ab initio theory of the Gibbs free energy and a hierarchy of local moment correlation functions in itinerant electron systems: The magnetism of Mn${}_3$A materials class
• Magneto- and Baro- Caloric Responses in Magnetovolumic Systems
• Recent Progress in the thermodynamics of ferrotoroidic materials
• Solid-state heating using the multicaloric effect in multiferroics
• Magnetoelectrocaloric effect of multiferroic GdFeO3