Temperature Dependence of the Magnetization for Amorphous Gd₆₅Co₃₅

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We present detailed investigation of the temperature dependence of the magnetization for amorphous Gd₆₅Co₃₅ below 340, K in magnetic fields up to 5.27, T. The paramagnetic susceptibility follows the Curie-Weiss law. We experimentally find that T^{2.00± 0.05} is the functional form of another dominant contribution to the temperature dependence of the magnetization than the spin wave term T^3/2. These T² and T^3/2 terms are interpreted as longitudinal and transverse fluctuations in the local moment derived from polarization of the spin bands. The longitudinal fluctuation comes from itinerant character of 3d electrons in Co atoms.