Heat capacity and magnetocaloric study on Dy5Ge3Si

Here, we report heat capacity and magnetocaloric effect (MCE) on R5T4 ternary compound Dy5Ge3Si. Heat capacity depicts a peak at 48.4 K which is associated with antiferromagnetic ordering. It gets suppressed and shifts towards low temperatures with field. The estimated critical field is 5T for antiferro to ferromagnetic transition. Heat capacity plays a significant role in determining MCE, where from isothermal entropy change and adiabatic temperature change can be derived. From MCE point of view, sample shows maximum ΔS of 6.6 mJ/g - K at 56.5 K and relative cooling power (RCP) of 356.4 J/kg for temperature range from 46 - 100 K and hence can be used for magnetic cooling technological applications. (author)