Abstract
The paper presents a comparative investigation of the influence of various surface treatment methods on the properties of the magnetostrictive alloys Tb \({}_{0.3}\) Dy \({}_{0.7}\) Fe \({}_{2}\) (terfenol-D) and Tb \({}_{0.3}\) Dy \({}_{0.7}\) Fe \({}_{1.8}\) Co \({}_{0.2}\) with the Laves phase structure. Using atomic-force, magnetic-force, and scanning electron microscopy, the structural features of the surface were studied after mechanical polishing, chemical, and ion etching. It was shown that substituting Co atoms for Fe atoms has a significant effect on the domain structure of the samples. The analysis of the obtained results made it possible to determine the optimal surface preparation methods for studying the properties of the highly magnetostrictive alloy Tb \({}_{0.3}\) Dy \({}_{0.7}\) Fe \({}_{2}\) and the substituted alloy Tb \({}_{0.3}\) Dy \({}_{0.7}\) Fe \({}_{1.8}\) Co \({}_{0.2}\) .
