| Autor: |
Veronique Pierron-Bohnes, Guy Schmerber, A. Derory, J. Arabski, Jacques Faerber, R.V.P. Montsouka |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
Materials Science and Engineering: B. 126:236-239 |
| ISSN: |
0921-5107 |
| Popis: |
L1 0 ordered (Fe–Ni) 50 Pt 50 alloy films with perpendicular magnetic anisotropy were successfully prepared by interdiffusing FePt(0 0 1) and NiPt(0 0 1) layers co-deposited on MgO(0 0 1) substrates by MBE. The [0 0 1] growth direction corresponds to the epitaxy of the alloy on the substrate and is the interesting growth orientation to get a perpendicular magnetization. The X-ray diffraction shows a high L1 0 chemical order ( S = 0.7 ± 0.1). The easy magnetization direction is perpendicular for all samples. The MFM images display highly interconnected stripes corresponding to up and down orientations of the magnetization. Large uniaxial magnetic anisotropy ( K u = 9.10 5 J/m 3 ) and suitable magnetic transition temperature ( T C = 400 K) are obtained. The addition of Ni changes the spin–orbit interaction in the FePt compound system, hence causes a decrease of anisotropy, saturation magnetization and coercivity. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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