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Structural Investigation Of TbCo2/Fe Magnetostrictive Thin Films By Tomographic Atom Probe And Mössbauer Spectrometry

A. Grenier, R. Lardé, E. Cadel, J. L. Breton, J. Juraszek, F. Vurpillot, N. Tiercelin, P. Pernod, J. Teillet
Published 2007 · Materials Science

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Abstract Sputtered TbCo 2 /Fe magnetostrictive multilayers have been deposited on both island posts and flat substrates and analysed by laser-assisted tomographic atom probe and 57 Fe Mossbauer spectrometry. The three-dimensional reconstructions of the layers were obtained, allowing the analysis of the interfaces. Differences are revealed, as the Fe-on-TbCo 2 interface is thinner than the TbCo 2 -on-Fe interface. This effect is attributed to Fe/Co interdiffusion, controlled by the establishment of the Tb layer. Fe layers are well crystallized.
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