Abstract

Lutetium nuclei, within trivalent lutetium ions, situated as dilute impurities in ferromagnetic gadolinium were used as a probe to estimate the local polarization of the conduction electrons. The sign and magnitude of the magnetic field acting on the lutetium nuclei were obtained using the technique of measuring the perturbation of the angular correlation of a cascade of nuclear gamma rays. The magnetic field at the dilute lutetium nuclei was found to be - 1.8 x 10/sup 5/ oersted at 87 deg K, extrapolating to --2.0 x 10/sup 5/ oersted at magnetic saturation, the negative sign indicating a field opposite to the gadolinium magnetization. (R.E.U.)

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