Abstract
We investigated the magnetic properties, corrosion resistance, and microstructure for the sputtered FeCoAlO films, and the properties of write heads that use them for pole tips. The FeCoAlO films have soft magnetic properties as well as magnetic induction Bs ∼ 2.2 T, which is equal to the Bs of pure-Fe. In-plane uniaxial anisotropy for the as-made films is almost unchanged though the magnetic field is applied during annealing, i.e., the magnetic annealing effect is negligible. The films have sufficient magnetic thermal stability and corrosion resistance to withstand magnetic head fabrication processes. For the write heads with pole tips which consist of FeCoAlO films, the overwrite (O/W) and the nonlinear transition shift (NLTS) show about -35 dB and 13%, respectively. Therefore, these FeCoAlO films can be advantageously applied to writing heads.
| Original language | English |
|---|---|
| Pages (from-to) | 2219-2221 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 38 |
| Issue number | 5 I |
| DOIs | |
| Publication status | Published - 2002 Sep 1 |
| Externally published | Yes |
| Event | 2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2 |
Keywords
- Corrosion resistance
- FeCoAlO film
- High magnetic induction
- Overwrite
- Soft magnetic properties
- Thermal stability
- Write head
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering