Abstract
(001)-oriented FePt films with large perpendicular magnetic anisotropy have been obtained on a soft magnetic underlayer (SUL). A nanocrystalline Fe-Si-B-Nb-Cu alloy film has been chosen as SUL, showing the coercivity H c of less than 80 A/m after annealing at 400°C. It has been found that the crystal orientation and magnetic properties of FePt films are improved by the introduction of a MgO interlayer between FePt and Fe-Si-B-Nb-Cu. The strong (001) texture and the large coercivity of 565 kA/m have been obtained in the tri-layer structure of Fe-Si-B-Nb-Cu (200nm)/MgO (5 nm)/FePt (10nm).
| Original language | English |
|---|---|
| Pages (from-to) | 47-51 |
| Number of pages | 5 |
| Journal | Materials Transactions |
| Volume | 47 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2006 Jan |
Keywords
- Iron platinum thin film
- L1 ordered structure
- Soft magnetic underlayer
- Sputtering
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering