Magnetic and magneto‐optical properties of perpendicular magnetic 3dtransition‐metal fluoride films

摘要

Optically transparent, ferromagnetic films of Fe‐F, Co‐F, and Ni‐F have been prepared by rf sputtering from powder‐compacted targets of FeF3, CoF3, and NiF2. The films are amorphous, containing a small amount of crystalline fluoride. Some films showed perpendicular magnetic anisotropy, high coercivity (700–1500 Oe), and fairly high remanence ratio (0.23–0.7). Faraday rotation coefficients of 104deg/cm at a wavelength of 633 nm were found.