Crystallographic Structure and Magnetic Properties in L10 FePt Thin Films Deposited at Different Temperature

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Abstract:

The crystallographic structure and magnetic properties of L10 FePt thin films deposited at different substrate temperature were investigated systematically in present paper. The ordered L10 FePt thin film was developed when substrate temperature is higher than 300 °C. The ordering parameter S, the degree of tetragonality c/a, and the epitaxial quality of the films, increase with increasing substrate temperature. The squareness and coercivity in the direction perpendicular to the film increase as the substrate temperature is increased and the perpendicular anisotropy is developed when the substrate temperature is higher than 300 °C. The magnetic anisotropy K u increases with increasing substrate temperature and it might be concluded that the magnetic anisotropy of ordered L10FePt thin films mainly stems from the magnetocrystalline origin and also possibly due to pair ordering mechanism.

Keywords: CRYSTALLOGRAPHIC STRUCTURE; FEPT THIN FILM; MAGNETIC PROPERTY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.4274

Publication date: February 1, 2012

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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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