Abstract
Magnetostriction of amorphous Pr0.2(Fe1-xCox)0.8 alloys (0 ≤ x ≤ 0.6) and Pry(Fe0.8Co0.2)x(Si0.43B0.57)z (0.7 ≤ x ≤ 0.85, 0.15 ≤ y ≤ 0.3, 0 ≤ z ≤ 0.3) alloys has been measured in the temperature range from 77 to 400 K. The value of magnetostriction λ (λ=(2/3)[(Δl/l)// - (Δl/l)⊥]) for Pr0.2(Fe1-xCox)0.8 exhibits a maximum at x =0.2; it is about 760×10-6 at 77 K and 260×10-6 at room temperature. Temperature dependence of the magnetostriction is descussed in terms of the singleion model.
