Artificial antiphase boundary at the interface of ferrimagnetic spinel bilayers

Ana V. Ramos, Sylvia Matzen, Jean-Baptiste Moussy, Frédéric Ott, and Michel Viret
Phys. Rev. B 79, 014401 – Published 5 January 2009

Abstract

CoFe2O4/Fe3O4 bilayers represent an unusual exchange-coupled system whose properties are due to the nature of the oxide-oxide superexchange interactions at the interface. In this work, we analyze the magnetization reversal behavior and magnetic interface structure using a variety of advanced techniques. Low-temperature magnetization, magnetotransport, and polarized neutron reflectivity measurements suggest that the magnetization configuration at the bilayer interface mimics that of an antiphase boundary found in spinel ferrite thin films, thus explaining the unique nature of the magnetic behavior.

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  • Received 24 July 2008

DOI:https://doi.org/10.1103/PhysRevB.79.014401

©2009 American Physical Society

Authors & Affiliations

Ana V. Ramos1, Sylvia Matzen1, Jean-Baptiste Moussy1, Frédéric Ott2, and Michel Viret3

  • 1CEA-Saclay, IRAMIS, SPCSI, 91191 Gif-Sur-Yvette, France
  • 2CEA-Saclay, IRAMIS, LLB, 91191 Gif-Sur-Yvette, France
  • 3CEA-Saclay, IRAMIS, SPEC, 91191 Gif-Sur-Yvette, France

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Issue

Vol. 79, Iss. 1 — 1 January 2009

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