Abstract
FMR absorption measurements have been carried out on compositionally modulated films prepared by electron beam evaporation in ≈5×10 −10 Torr and nominally consisting of 20 layers of pure cobalt interleaved with 20 layers of pure manganese. Detailed FMR results are reported at 9, 24, 37 and 73 GHz using a particular film for which the variation of composition with depth was investigated by means of a scanning Auger microprobe. Each cobalt layer had a thickness of (24±5) Å, and each manganese layer had a thickness of (36±5) Å: the total thickness of the film was estimated to be 1200 Å. A well-defined compositional periodicity was resolved for the 8–10 layers near the glass substrate: this periodicity gradually disappeared and was unobservable in the top 5–6 layers. The magnetic measurements indicated an isotropic homogeneous magnetic material characterized by a saturation magnetization 4 πM s = (11.80±0.05) kOe, a value g = 2.12±0.01, and a Landau-Lifshitz damping parameter G = (3.4±0.5) × 10 8 Hz. This magnetic material is believed to be a fcc cobalt alloy containing 13–14% manganese.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
