Title :
Effect of quenching on the magnetostriction on Fe1-xGa x (0.13x<0.21)
Author :
Clark, Arthur E. ; Wun-Fogle, Marilyn ; Restorff, James B. ; Lograsso, Thomas A. ; Cullen, James R.
Author_Institution :
Clark Associates, Adelphi, MD, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
The magnetostriction (λ100) of b.c.c. Fe is increased over 10-fold at room temperature by the substitution of ~20% gallium for Fe. Fe1-xGax alloys with x between 0.19 and 0.214 that are quenched from 800°C exhibit magnetostrictions ~25% higher than those furnace-cooled at 10°/min. We propose that this great increase of magnetostriction above that of Fe in Fe-Ga alloys is not due to conventional magnetoelastic effects but due to the substitutive presence of asymmetrically shaped clusters of the Ga atoms. As the concentration of solute atoms approaches 25%, the lattice becomes relaxed with formation of a more ordered structure and the magnetostriction decreases in value
Keywords :
ferromagnetic materials; gallium alloys; iron alloys; magnetostriction; quenching (thermal); 800 C; Fe-Ga; Fe1-xGax alloy; magnetostriction; quenching; Atomic measurements; Gallium alloys; Iron alloys; Laboratories; Magnetic field induced strain; Magnetic field measurement; Magnetic materials; Magnetic sensors; Magnetization; Magnetostriction;
Journal_Title :
Magnetics, IEEE Transactions on
