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By application of the perturbed -ray distribution method following heavy-ion reactions, we have found an experimental method of producing and investigating strong local 4d magnetism in metals. Mo ions recoil implanted into alkali metals show a large local moment and an extremely small 4d spin-relaxation rate. The data along with an analysis using a Born-Haber cycle are consistent with a localized 4d^5 shell behavior for isolated Mo ions in Rb and Cs.
Riegel et al. (Mon,) studied this question.