AbstractThe magnetostriction of some amorphous alloys is investigated in the temperature range of the magnetic phase transition. Measurements are made with the help of a method described previously, and which is based on the observation of the macroscopical torsional strain under a longitudinal electrical current. The magnetostriction near the ferromagnetic phase transition is found to obey a (Tc–T)χ‐law with critical exponents depending on the type of alloy and values varying in the range of χ = 1.1 t