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A magnetic impurity is an impurity in a host metal that has a magnetic moment. The magnetic impurity can then interact with the conduction electrons of the metal, leading to interesting physics such as the Kondo effect, and Heavy Fermion behaviour. Some examples of magnetic impurities that metals can be doped with are iron and nickel. Such an impurity will contribute a Curie-Weiss term to the magnetic susceptibility, .
Additional recommended knowledge
Early theoretical work concentrated on explaining the trend observed as the impurity was varied across the transition metal group. Based on the idea of a virtual bound state, Anderson proposed a model that was successful in explaining the formation of a localized magnetic moment from a magnetic impurity.
P.W. Anderson, Phys. Rev. 124 (1961), p. 41
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Magnetic_impurity". A list of authors is available in Wikipedia.|