Abstract
The giant metal cluster molecule Pd561Phen36O x is the largest member of a series that has recently been prepared by Schmid [1]. Pronounced size effects are expected to show up in the magnetic properties of metal particles of the size of the Pd-561 core of the molecule. We have measured the susceptibility on four different batches of the material, with quite satisfactory reproducibility. There is a low temperature tail that is attributed to small amounts of impurities. The nearly temperature-independent paramagnetism that is observed is most probably due to an exchange enhanced Pauli spin susceptibility and is already close to the bulk value. The absence of size effects, i.e. a drop at low temperatures, is either due to interactions between the clusters or a result of a very small energy level spacing.
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van Ruitenbeek, J.M., Jurgens, M.J.G.M., Schmid, G. et al. Metallic susceptibility in giant molecule: Pd561Phen36O200 . Z Phys D - Atoms, Molecules and Clusters 19, 267–270 (1991). https://doi.org/10.1007/BF01448308
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DOI: https://doi.org/10.1007/BF01448308