IMF2017

Ferroic and multiferoic materials thermally respond to externally driven changes of ferroic properties. Usually these changes are induced either by application or removal of the field thermodynamically conjugated to a given property. The corresponding isothermal change of entropy and adiabatic change of temperature are commonly used to quantify the caloric response of the studied material. From this perspective we provide a general thermodynamic framework to investigate multicaloric effects in multiferroic materials. This is applied to the study of both magnetostructural and magnetoelectric multiferroics. Mesoscopic Landau models with appropriate interplay between the corresponding ferroic properties (i.e. order parameters such as polarization, magnetization and strain) are proposed for specific materials and multicaloric effects are obtained as a function of the two relevant applied fields. It is further shown that these effects comprise the contributions from each ferroic property as well as the cross-contribution arising from the interplay between these properties. The obtained results will be compared with available experimental data.