Abstract
The magnetoresistance of nearly magnetic transition metal-based alloys and actinides described by the one-band Wolff model is calculated within the localised spin fluctuation approximation. In the low-field, low-temperature limit the magnetoresistance is positive and proportional to H2/TK2(T<<H<<TK) with the coefficient of the H2 term being a parabolically decreasing function of temperature. At higher temperatures the magnetoresistance is negative and in the small-field limit it is proportional to H2/TK2(H<<TK<<T). In the intermediate temperature region the magnetoresistance is negative for small fields but changes sign as the strength of the magnetic field is increased.
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