High energy products in rapidly annealed nanoscale Fe/Pt multilayers
Abstract
Magnetic properties of nanocomposite Fe-Pt films with Fe concentration higher than 50 at % have been investigated in this study. Fe/Pt multilayers were produced by sputtering and magnetic hardening was observed after heat treatment including rapid annealing. The final nanocomposite films consisted of the hard face-centered tetragonal FePt phase and a soft face-centered-cubic phase. The maximum energy products of the optimally processed samples exceeded 40 MGOe. Evidence for exchange coupling of the hard and soft phases was found.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 1998
- DOI:
- 10.1063/1.120793
- Bibcode:
- 1998ApPhL..72..483L
- Keywords:
-
- 75.70.Cn;
- 75.50.Kj;
- 75.50.Vv;
- 81.40.Rs;
- 75.50.Bb;
- 75.30.Et;
- 81.40.Gh;
- Magnetic properties of interfaces;
- Amorphous and quasicrystalline magnetic materials;
- High coercivity materials;
- Electrical and magnetic properties;
- Fe and its alloys;
- Exchange and superexchange interactions;
- Other heat and thermomechanical treatments