Journal of Magnetism and Magnetic Materials, vol.271, no.1, pp.74-78, 2004 (SCI-Expanded)
Magnetic measurements of metallic glass Fe78Si9B 13 were taken using a DC inductive magnetometer. Samples were isothermally annealed in air at 773K, and convenient annealing times were chosen for each step. For every annealing step, M-H plots were taken and coercivities obtained. Changes in coercivity were observed, and coercivity-annealing time graphs were plotted. The minimum coercivity was measured as 1.6A/m at this fixed temperature. After each annealing step X-ray diffraction patterns and magnetic domain pictures were taken. Magnetic domain pictures were taken by the Bitter Technique. The observations are interpreted in terms of stress relief and sample crystallization. The appearance of zig-zag domain walls in the as-cast sample should be particularly noted. We show the development of regions of maze domains as surface crystallization onset occurs. © 2003 Elsevier B.V. All rights reserved.