Nanospheres of silica with an εFe<inf>2</inf>O<inf>3</inf> single crystal nucleus

Elena Taboada, Marti Gich, Anna Roig

    Research output: Contribution to journalArticleResearchpeer-review

    50 Citations (Scopus)


    A route to produce single crystals of ε-Fe2O3 individually wrapped in a silica shell is presented. Formation of ε-Fe 2O3/silica nanospheres was achieved by controlled recrystallization of maghemite particles confined in silica shells via calcination in air. Phase transition was monitored by X-ray diffraction, magnetometry, and transmission electron microscopy. Core-shell nanocomposite particles can be dispersed as a colloidal suspension in several polar liquids enlarging the processability spectrum of the material and thus facilitating the use of ε-Fe2O3 in technological applications and its integration in devices. © 2009 American Chemical Society.
    Original languageEnglish
    Pages (from-to)3377-3382
    JournalACS Nano
    Issue number11
    Publication statusPublished - 24 Nov 2009


    • Core-shell
    • Iron oxide
    • Magnetic nanoparticles
    • Phase transitions
    • Silica nanocomposite
    • ε-Fe O 2 3


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