Nanoscale precipitates in magnetostrictive Fe1−xGax alloys for 0.1 < x < 0.23

We report high resolution transmission electron microscopy (HRTEM) investigations of magnetostrictive Fe1−xGax alloys. Our findings show the presence of nanometer-sized (<2 nm) inclusions of a DO3-like structure within an A2 matrix phase for a composition of 0.1 < x < 0.23, whose interphase interfaces are oriented along [1 1 0]. The density of the nano-precipitates increased with increasing Ga content, however the size of the nano-precipitates was nearly independent of x.