Magnetocaloric Properties of Centered Molecular Quantum Spin Systems

We investigate the magnetocaloric properties of a class of centered magnetic molecules that are very similar in their magnetic properties. In particular, we study the magnetocaloric response of these molecules in the space of two exchange parameters and as function of the spin quantum numbers. Major figures of merit such as adiabatic temperature change and isothermal entropy change as well as theoretically achievable low temperatures show that overall ferromagnetic interactions are preferential as long as this does not lead to dipolar ordering.