| Autor: |
Weller, D., Baglin, J. E. E., Kellock, A. J., Hannibal, K. A., Toney, M. F., Kusinski, G., Lang, S., Folks, L., Best, M. E., Terris, B. D. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 5/1/2000, Vol. 87 Issue 9, p5768, 3p |
| Abstrakt: |
Co/Pt multilayer films with perpendicular magnetic anisotropy and large out-of-plane coercivities of 3.9–8.5 kOe have been found to undergo a spin reorientation transition from out-of-plane to in-plane upon irradiation with 700 keV nitrogen ions. X-ray reflectivity experiments show that the multilayer structure gets progressively disrupted with increasing ion dose, providing direct evidence for local atomic displacements at the Co/Pt interfaces. This effectively destroys the magnetic interface anisotropy, which was varied by about a factor of 2, between K[sub S]≅0.4 erg/cm[sup 2] and K[sub S]≅0.85 erg/cm[sup 2] for two particular films. The dose required to initiate spin-reorientation, 6×10[sup 14] N[sup +]/cm[sup 2] and 1.5×10[sup 15] N[sup +]/cm[sup 2], respectively, scales with K[sub S]. It is roughly equal to the number of Co interface atoms per unit interface area contributing to K[sub S]. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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