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Large moments in bct FexCoyMnz ternary alloy thin films
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Journal of Material Sciences & Engineering

ISSN: 2169-0022

Open Access

Large moments in bct FexCoyMnz ternary alloy thin films


3rd International Conference on Theoretical and Condensed Matter Physics

October 19-21, 2017 New York, USA

Yves Idzerda

Montana State University, USA

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Establishing high magnetic moment materials in thin film form is critical for magnetic device applications. Shown in the figure is the average magnetic moments of bct FexCoyMnz ternary alloy thin films deposited on MgO(001) determined from the X-ray magnetic circular dichroism measured elemental moments as a function of composition. Thin film epitaxy stabilized the bct structure for 80% of the available ternary compositional space compared to only a 23% stability region for the bcc bulk phase. A maximum average atomic moment of 3.2 �µB/atom was observed for a Fe0.32Co0.47Mn0.21 (well above the 2.4 �µB/atom found at the peak of the Slater-Pauling binary alloy curve). The compositions exhibiting high moments are not stable as a bcc structure in the bulk ternary phase diagram.

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