When bulk ferromagnetic Fe80P13C7 amorphous rods of approximately 2-mm diam
eter are compacted together in a hot press, a variety of different microstr
uctures, depending on the experimental conditions, are produced. The most i
ntriguing microstructure is that two different bulk amorphous rods can be f
used together perfectly at a temperature of 683 K and under a pressure of 2
.5 to 4 GPa. for a period of 5 min.