Kinetics of crystallization in an amorphous (Fe0.5Co0.5)(77)Si11B9Cu0.6Nb2.4 (at.%) alloy was investigated using differential scanning calorimetry (DSC). Transformed fraction as a function of temperature was obtained by accurate DSC measurement and the experimental data analyzed with Vyazovkin model-free kinetic method. Reconstructed form of the experimental kinetics model, g(alpha), clearly showed the crystallization mechanism do not belongs to a single model but almost follows the Avrami-Erofe'ev. Magnetic coercivity and hysteresis loss values of the annealed samples at 823 K were 7.5 A m(-1) and 1.2 J m(-3), compared to 17.1 A m(-1) and 37.1 J m(-3) for as spun samples. Magnetic measurements show the annealing reduces both coercivity and hysteresis loss at all frequencies. (C) 2013 Elsevier B.V. All rights reserved.