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Nanoscale magnetic structure of ferromagnet/antiferromagnet manganite multilayers

Abstract:

We use polarized neutron reflectometry and dc magnetometry to obtain a comprehensive picture of the magnetic structure of a series of La2/3Sr1/3MnO3/Pr2/3Ca1/3MnO3 (LSMO/PCMO) superlattices, with varying thickness of the antiferromagnetic (AFM) PCMO layers (0≤tA≤7.6nm). While LSMO presents a few magnetically frustrated monolayers at the interfaces with PCMO, in the latter a magnetic contribution due to ferromagnetic (FM) inclusions within the AFM matrix is maximized at tA∼3nm. This enhancement of FM moment occurs at the matching between layer thickness and cluster size, implying the possibility of tuning phase separation by imposing appropriate geometrical constraints which favor the accommodation of FM nanoclusters within the "non-FM" material. © 2007 The American Physical Society.

Año de publicación:

2007

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Nanostructura
    • Ciencia de materiales
    • Ciencia de materiales

    Áreas temáticas:

    • Magnetismo
    • Procesos en relieve (Block printing)
    • Ingeniería y operaciones afines

    Contribuidores:

    Mathur N.Mathur N.
    Hueso L.E.Hueso L.E.
    Dario NiebieskikwiatDario Niebieskikwiat
    Salamon M.B.Salamon M.B.
    Borchers J.A.Borchers J.A.