| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1802916 | Journal of Magnetism and Magnetic Materials | 2009 | 5 Pages |
Abstract
We report on coercivity mechanisms in Co65Fe35 films. Using a unique High Target Utilisation Sputtering System (HiTUS) sputtering system we have produced a range of samples with controlled grain size in the range 6–30 nm. This has enabled an evaluation of the effects of different seed layers (Ru, Cu, Ta and Mg) and the effects of lamination of the films. We found that in 100 Å single-layer films the coercivity rises abruptly from 29 to 90 Oe with grain size. We found that samples with Cu or Ru seed layers show the largest reduction in coercivity. The effects of lamination are more complex since it leads to a reduction in grain size whereas coercivity increases. We believe this is due to RKKY coupling through the metallic interlayers.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
S. Ladak, L.E. Fernández-Outón, A. Smith, T. Harrison, H. Patel, T. Kwan, R.W. Chantrell, K. O’Grady,