The paramagnetic susceptibility of polycrystalline praseodymium metal has been measured between 300 and 1500°K. The measurements are in good agreement with the predictions of the Van Vleck theory of paramagnetism based on a localized f-electron model of noninteracting Pr3+ ions. By making a reasonable correction for the contribution of conduction electrons to the paramagnetism, a best fit to the experimental results is obtained by using a screening constant σ=34.
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Arajs et al. (1961) studied this question.
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