Investigation of microstructure and soft magnetic properties of Fe65Co35 thin films deposited on different underlayers

Fe65Co35 /underlayer bilayer films were successfully prepared on different underlayer materials (Co93Fe7, Ni80Fe20, Cu, and Fe). The soft magnetic properties of Fe65Co35 films were improved when the texture changed from (110) to (200), which can be controlled by different underlayers. The conversion electron Mossbauer spectroscopy revealed that the angle between the effective magnetization and the normal direction of films with (110) texture is smaller than that with (200) texture. Calculations confirmed that the total anisotropy energy density of Fe65Co35 film with (110) texture is larger than that with (200) texture. Therefore, the soft magnetic properties of Fe65Co35 thin films with (200) texture are better than that with (110) texture.