EXTRAORDINARY HALL-EFFECT (EHE) OF FERROMAGNETIC COMPOSITES IN THE EFFECTIVE-MEDIUM APPROXIMATIONстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The expression for the EHE coefficient R(s) of ferromagnetic composites is derived in the framework of the effective medium approximation. In the case of a composite ferromagnetic metal-dielectric, R(s) increases monotonically as the concentration of the magnetic component c decreases and in the dielectric region (c less than or equal to 1/3) R(s) = 9R(s1)(1 - c), where R(s1) is the EHE coefficient of the ferromagnetic component. The dependences of R(s) on composition are calculated for composites ferromagnetic-paramagnetic metals, ferromagnet-ferromagnet. The typical relation R(s) similar to rho 2 for uniform ferromagnets, where rho is electroresistivity, is not fulfilled in all the cases considered.