Abstract
L10-ordered MnAl thin films were epitaxially grown by sputtering. The film composition dependences of structural and magnetic properties were systematically investigated in the MnAl thin films. Both the L10-ordered parameter and the perpendicular magnetic anisotropy energy strongly depended on the composition of the MnAl thin films. The MnAl thin films with a Mn composition of 53-54 at.% showed both the highest L10-ordered parameter and the perpendicular magnetic anisotropy. The substrate and annealing temperatures were optimized to improve the magnetic properties and surface morphology. We have fabricated MnAl thin films with both a very high Ku of 12 ' 106 erg/cm3 and a small surface roughness of ca. 0.2nm by optimizing the film composition and substrate and annealing temperatures. These results are useful guidelines for the fabrication of highly L10-ordered MnAl thin films with a large perpendicular magnetic anisotropy.
| Original language | English |
|---|---|
| Article number | 0802A2 |
| Journal | Japanese journal of applied physics |
| Volume | 56 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2017 Aug |
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)