Microwave resonance observations in gadolinium solid solutions

This is the authors' abstract. We don't add key points for this paper.

Microwave resonance measurements have been made on a number of paramagnetic, ferromagnetic and antiferromagnetic Gd-Lu, Gd-Y, Gd-Sc and Gd-La alloys. A paramagnetic value for g = 1.998 ± 0.005 has been obtained for those Gd-Y alloys containing small concentrations of gadolinium and close to the free-ion value; g = 1 995 ± 0.010 for dilute alloys of gadolinium in scandium or lanthanum. These values compare with a value for g = 2.010 ± 0 010 reported by Harris et al. in 1965 for Gd-Lu alloys of similar gadolinium content. In all alloys examined the g factor increases as the gadolinium content of the alloy decreases. The resonance line intensity of the Gd-Y and Gd-Lu alloys falls rapidly on cooling below the Neel temperature and observations have been made well into the spiral-spin region. As with ferromagnetic observations there is some uncertainty as to the factors influencing the absorption and no interpretation of these lines is made.