Abstract
We report results on surface and micromagnetic structures of Fe thin films consisting of a Pt underlayer. We use atomic force microscopy to study the surface structure evolution of the Fe films as a function of annealing time at an annealing temperature of 800 °C. Power spectral density analysis shows saturation in roughness exponent after 15 min of annealing. However, lateral correlation length and roughness continue to increase for up to 45 min. At high annealing temperature, the authors find two separate phase correlation lengths and a single surface correlation length indicating super-spin-glass state in the system.
Keywords
iron, platinum, ferromagnetic materials, soft magnetic materials, magnetic thin films, spin glasses, diffusion, surface structure, micromagnetics, magnetic structure, atomic force microscopy, annealing, magnetic domains
Disciplines
Materials Science and Engineering
Publisher
American Institute of Physics
Publication Date
8-28-2006
Rights Information
© 2006 American Institute of Physics
Rights Holder
American Institute of Physics
Permanent URL
Recommended Citation
Aurongzeb, D.; Holtz, M.; and Menon, L., "Diffusion process and formation of super-spin-glass state in soft magnetic Fe/Pt system" (2006). Physics Faculty Publications. Paper 537. http://hdl.handle.net/2047/d20002685
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figure2.zip (165 kB)
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figure3.zip (2084 kB)
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Notes
Originally published in Applied Physics Letters 89, 092501 (2006). DOI:10.1063/1.2335977