In this paper, FeCoB amorphous thin films were deposited on glass substrates using a triode sputtering source under a uniform applied magnetic field. The as-deposited films exhibit a low coercivity of 1.7 Oe, a high anisotropy field of 37 Oe and 4 17.5 kG, when sputtered with a bias voltage of 180 V. The large anisotropy fields and saturations in these films result in a ferromagnetic resonance frequency as high as 2.63 GHz, a relative permeability of 400-500 and a low dissipation of 10-30 in the frequency range of 0.1-1 GHz. Upon subsequent annealing at 200-400 C for 2 hrs, the magnetic properties of the films are found to be affected significantly. The magnetic properties of the as-deposited and the annealed films have been compared with a considering of the microstructure modification during annealing.Index Terms-UHF properties, soft magnetic properties, amorphous magnetic thin films, Fe-Co-B alloys.

To extend the practical applications of bulk metallic glasses, the preparation of metallic glass coatings on various substrates becomes an important research issue. Among the interfacial properties of the coatings, the adhesion between films and substrates is the most crucial. In this study, amorphous Zr 61 Al 7?5 Ni 10 Cu 17?5 Si 4 (ZrAlNiCuSi) thin films were deposited on SUS 304 stainless steel at various sputtering powers by dc sputtering. According to the scratch tests, the introduction of Cr and Ti buffer layers effectively improves the adhesion between the amorphous thin films and substrate without changing the surface properties, such as roughness and morphology. The antimicrobial results show that the biological activities of these microbes, except Acinetobacter baumannii, are effectively suppressed during the test period.

No abstract

No abstract

No abstract