Abstract
Mg clusters of 100 to 1000 atoms are evaporated in a Xe gas flow and then isolated in a Xe matrix. These clusters show a log-normal size distribution, which has an effect on the ESR spectral line and consequently on the relative susceptibility χ χ p as a function of T. We expected to find for clusters of Mg a linear behaviour of the susceptibility which is typical for divalent metals. The ESR measurements of χ χ p show that the spin susceptibility is proportional to 1 T according to Curie-law of odd particles above 30 K, below this temperature we notice a variation of the relative odd and even populations. We believe that all particles are singly ionized above 30 K.
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