Ordering intermetallic alloys by ion irradiation: a way to tailor magnetic media

Abstract

Combining He ion irradiation and thermal mobility below 600K, we both trigger and control the transformation from chemical disorder to order in thin films of an intermetallic ferromagnet (FePd). Kinetic Monte Carlo simulations show how the initial directional short range order determines order propagation. Magnetic ordering perpendicular to the film plane was achieved, promoting the initially weak magnetic anisotropy to the highest values known for FePd films. This post-growth treatment should find applications in ultrahigh density magnetic recording.

7 pages, 3 Figures

Cited by in corpus (6)

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• Fabrication of magnetic atom chips based on FePt
• Effect of He on the Order-Disorder Transition in Ni3Al under Irradiation
• Structural ordering of laser-processed FePdCu thin alloy films
• Improvement of structural, electronic, and magnetic properties of Co${}_2$MnSi thin films by He${}^{+}$-irradiation
• A study of phase separation processes in presence of dislocations in binary systems subjected to irradiation