2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26663An unusually large magnetocaloric effect for the temperature region below 10 K is found for the Fe14 molecular nanomagnet. This is to large extent caused by its extremely large spin S ground-state combined with an excess of entropy arising from the presence of low-lying excited S states. We also show that the highly symmetric Fe14 cluster core, resulting in small cluster magnetic anisotropy, enables the occurrence of long-range antiferromagnetic order below T_N=1.87 K.4 pages, 3 figures, accepted for publication in Applied Physics LettersMesoscale and Nanoscale PhysicsMaterials Sciencetext