A Ferromagnetic Mixed-Valent Mn Supertetrahedron: Towards Low-Temperature Magnetic Refrigeration with Molecular Clusters


  • This work was supported by the EPSRC, the Leverhulme Trust (UK), and MAGMANet (NMP3-CT-2005-515767).


original image

Fridge magnet: A decametallic mixed-valent Mn supertetrahedron (see picture; M purple, O red, N blue, Br brown, C gray) displays dominant ferromagnetic exchange and a spin ground state of S=22. The magnetic behavior of the cluster makes it suitable for use as a low-temperature magnetic refrigerant.