The influence of hydrostatic pressure on the magnetic and magnetocaloric properties of DyRu2Si2

Ahmad Us Saleheen, Tapas Samanta, Mojammel Khan, Philip W. Adams, David P. Young, Igor Dubenko, Naushad Ali, Shane Stadler
2017 Journal of Applied Physics  
We report the magnetic and magnetocaloric properties of the tetragonal rare-earth compound DyRu 2 Si 2 under applied hydrostatic pressure. The isothermal entropy change (DS) and the adiabatic temperature change (DT ad ) were calculated from magnetization data collected at different applied pressures and from heat capacity measurements conducted at atmospheric pressure, respectively. The application of hydrostatic pressure significantly modified the multi-step magnetization curve and the
more » ... on magnetization. A suppression of the magnetization was observed for P ¼ 0.588 GPa and P ¼ 0.654 GPa whereas, at about P %1 GPa, the saturation magnetization increased and the magnetization isotherms again resembled the curves measured at atmospheric pressure. A small thermal hysteresis was observed between the heating and cooling M(T) curves at T t ¼ 3:4 K, with an applied magnetic field of H ¼ 0.1 T. This thermal hysteresis indicates a firstorder like transition which was also supported by the Arrott plot analysis. The volume magnetostriction was estimated from the pressure-dependent magnetization measurements using a Maxwell relation.
doi:10.1063/1.4974466 fatcat:wqz64l7ygnao3jm23q3uh5qhiq