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Underlayer-enhanced perpendicular anisotropy of FePt films
- Source :
- Journal of Magnetism and Magnetic Materials. 304:e237-e239
- Publication Year :
- 2006
- Publisher :
- Elsevier BV, 2006.
-
Abstract
- (0 0 1)-orientation FePt films were successfully fabricated on hydrogen-terminated Si(1 0 0) substrates by inserting Cu underlayers. By using the Co intermediate layer to suppress the diffusion of Cu and Si, the perpendicular coercivity reaches 6500 Oe after 300 °C postannealing. The dynamic-stress-induced ordering by the formation of Cu 3 Si was the main reason for high coercivity. To improve the perpendicular anisotropy, Cu/CoFe/Ag composite underlayer was used. The large lattice constant of Ag provided a sufficient in-plane tensile static stress in FePt films. Both large perpendicular coercivity (8200 Oe) and good perpendicular squareness (∼0.9) were achieved for samples deposited at 300 °C.
Details
- ISSN :
- 03048853
- Volume :
- 304
- Database :
- OpenAIRE
- Journal :
- Journal of Magnetism and Magnetic Materials
- Accession number :
- edsair.doi...........fcd27d57233a5533cfa26272b7119c25