An Experimental Evaluation of Quenched Fe-Ga Alloys: Structural Magnetic and Magnetostrictive Properties

This study examines the effect of quenching on Fe100-x-Ga-x (x - 20 & 25) alloys. The long range of D0(3) ordering causes a minor variation in unit cell, which reduces peak intensity. This existence of D0(3), coupled with the A2 phase, leads to a decrease in magnetostriction in the quenched 25 at.% Ga alloy, which promotes D0(3) ordering. An Fe-Ga alloy having 20 at.% Ga that has been quenched possesses the A2 phase, the production of D0(3) is a first-order transition. Continuous ordering attempts to suppress D0(3) in 25 at. % Ga alloys were ineffective. Quenched Fe-80-Ga-20 alloy's saturation magnetization is larger than Fe-75-Ga-25 alloy. This suggests that lowering the nonmagnetic element Ga promotes saturation magnetization. The rise in material flaws and dislocations is due to the increased Ga content and higher quenching temperature. In a single-phase region, Fe-80-Ga-20 has the greatest magnetostriction at 85 ppm. Magnetostriction diminishes as Ga content rises to 25%, the D0(3) structure is responsible for this drop.