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Atomic Ordering Kinetics of FePt Thin Films

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Abstract:

In the present study, the nucleation and growth kinetics of the L10 ordered domains in FePt thin films were studied by using X-ray diffraction (XRD) measurements combined with transmission electron microscopy (TEM). A small nucleation activation energy En = (0.5 ± 0.1) eV and a relatively large growth activation energy Eg = (0.9 ± 0.1) eV for the L10 ordered domains are separately determined. The high ratio Eg /En > 1 yields an understanding of a high L10 ordering temperature for the FePt thin films used for magnetic recording media.

Keywords: ACTIVATION ENERGY; L10 ORDERED DOMAINS; ORDERING KINETICS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C105

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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