Approach to saturation of the magnetization of dilute AuFe alloys |
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Authors: | FW Smith JC Liu |
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Institution: | Department of Physics, The City College of the City University of New York, New York, NY 10031, USA |
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Abstract: | We present a reinterpretation of our recent measurements of the magnetic properties of some dilute AuFe alloys. We find that the observed approach to saturation of the magnetization for these AuFe alloys can be understood if both single-impurity (Kondo) effects and effects due to interactions between impurities via the Rudeman-Kittel-Kasuya-Yosida (RKKY) interaction, V(r) = (V0 cos 2kFr)/r3, are properly included in the analysis. The analysis yields for the strength of the RKKY interaction V0 = (1.1 ± 0.3) × 10-36ergcm3, for the s-d exchange parameter |J| = (1.9 ± 0.3) eV, and for the Kondo temperature TK = (0.8 ± 0.1) K. We conclude that mean free path effects do not significantly influence the observed approach to saturation of the magnetization for the AuFe alloys studied. |
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