Magnetic behavior of na films with Fe, Co, and Ni impurities |
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Authors: | Bergmann G Hossain M |
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Institution: | Department of Physics, University of Southern California, Los Angeles, California 90089-0484, USA. |
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Abstract: | Thin films of Na with Fe, Co, and Ni impurities are investigated. The magnetization of the impurities is measured by means of the anomalous Hall resistance. Fe and Co show a moment of about 6mu(B), while for Ni no moment is detected. Furthermore, the magnetic dephasing of the conduction electrons is measured by means of weak localization. The dephasing rate 1/tau(phi) of the 3d impurities differ qualitatively. For Fe impurities, 1/tau(phi) is so large that it cannot be measured. For Co, 1/tau(phi) has a moderate value while Ni shows hardly a dephasing effect at all. |
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