Comment on 'Table-like magnetocaloric effect and enhanced refrigerant capacity in Eu8Ga16Ge30-EuO composite materials' [Appl. Phys. Lett. 99, 162513 (2011)]

Abstract

This is a comment on 'Table-like magnetocaloric effect and enhanced refrigerant capacity in Eu8Ga16Ge30-EuO composite materials', published few years ago. Refrigerant Capacity (RC) and Relative Cooling Power (RCP) are properties that characterize the magnetocaloric effect. RCP and mainly RC are also important to characterize other i-caloric effects (electrocaloric and mechanocaloric effects). This comment intends to point out mistakes in a specific paper and to be helpful to prevent inappropriate comparisons between RC and RCP.