Dehydrogenation was followed by magnetic measurements at room temperat
ure in order to get information about the structure of the as-quenched
and hydrogenated FeNiZr and FeCuBZr amorphous alloys. Hydrogenation i
ncreased the saturation magnetization, caused extra stresses and destr
oyed the as-cast clusters. These structural modifications were only pa
rtly recovered at room temperature probably due to the remaining H in
the material.