Abstract
In general, ultrathin disordered FePt film exhibits in-plane magnetic anisotropy due to large demagnetization fields and negligible volume anisotropy. Here, we demonstrated that magnetization reorientation from in-plane to out-of-plane takes place when ultrathin disordered FePt film is sandwiched by amorphous SiO 2 layers and annealed at 350 °C. Based on the interfacial and structural analysis from X-ray photoelectron spectroscopy and high resolution transmission electron microscopy, the reorientation originates from the electronic structural changes because of strong bonding between Fe and O atoms at the top FePt/SiO 2 interface. This interface anisotropy plays a crucial role in the magnetic behaviour, resulting in magnetization reorientation of ultrathin disordered FePt film.
| Original language | English |
|---|---|
| Pages (from-to) | 489-493 |
| Number of pages | 5 |
| Journal | Applied Surface Science |
| Volume | 353 |
| DOIs | |
| State | Published - 30 Oct 2015 |
| Externally published | Yes |
Keywords
- Interfacial electronic structures
- Magnetization reorientation
- X-ray photoelectron spectroscopy
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