Magnetic From Factor of Gold-Chromium Alloys

概要

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The magnetic form factors of gold-chromium alloys with 23.5 and 18.4 atomic percent chromium were studied by means of neutron diffraction. The results were analyzed by considering the contributions of 3d and free electrons with R-K-K-Y polarization. The experimental form factors normalized by the atomic magnetic moment obtained by the susceptibility measurement were f=(0.85±0.13)f_<Cr>+(0.11±0.19)f_s, for 18.4 atomic percent chromium, and f=(0.816±0.028)f_<Cr>+(0.152±0.034)±f_s, for 23.5 atomic percent chromium, respectively. The results indicated that s and d-electrons should polarize parallel in contradiction to the results of Kondo effect. It is shown in this paper that this dilemma can be removed if we assume that the s-d exchange interaction constant J is dependent on the magnitude of scattering vector.
社団法人日本物理学会の論文
1970-10-05