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Influence of the phenomena occurring at the interface between L10-ordered-FePt and Fe on the coercivity behavior

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Abstract

L10-ordered FePt/Fe thin bi-layers were grown using a molecular beam epitaxy onto (100)-MgO substrates changing the soft Fe layer thickness. The study of the intermixing phenomena occurring at the hard/soft interfaces was carried out using surface Mössbauer spectroscopy. The magnetic properties of the samples were analyzed with a magneto-optical Kerr effect magnetometer. The surface morphology and the magnetic domains were analyzed with an UHV atomic and magnetic force microscopy in tapping and lift mode respectively.The present work clearly demonstrates that the degree of interface intermixing and reactions is the responsible for the coercivity behavior in exchange-spring magnets.

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Authors and Affiliations

  1. Physics Department, University of Parma, Parco Area delle Scienze 7/A, 43124, Parma, Italy

    Massimo Carbucicchio

  2. National Institute of Optics, CNR, Via Branze 45 – 25123, Brescia, Italy

    Massimo Carbucicchio

Authors
  1. Massimo Carbucicchio
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Correspondence to Massimo Carbucicchio.

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This article is part of the Topical Collection on Proceedings of the International Symposium on the Industrial Applications of the Mössbauer Effect (ISIAME 2016), Cape Town, South-Africa, 4-8 September 2016

Edited by Frans Waanders

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Carbucicchio, M. Influence of the phenomena occurring at the interface between L10-ordered-FePt and Fe on the coercivity behavior. Hyperfine Interact 237, 153 (2016). https://doi.org/10.1007/s10751-016-1366-6

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  • DOI: https://doi.org/10.1007/s10751-016-1366-6

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