Cationic ordering control of magnetization in Sr<inf>2</inf>FeMoO<inf>6</inf> double perovskite

L. I. Balcells, J. Navarro, M. Bibes, A. Roig, B. Martínez, J. Fontcuberta

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    359 Citations (Scopus)


    The role of the synthesis conditions on the cationic Fe/Mo ordering in Sr2FeMoO6 double perovskite is addressed. It is shown that this ordering can be controlled and varied systematically. The Fe/Mo ordering has a profound impact on the saturation magnetization of the material. Using the appropriate synthesis protocol a value of 3.7 μB has been obtained. Mössbauer analysis reveals the existence of two distinguishable Fe sites and a charge density at the Fem+ ions significantly larger than 3d5 suggesting a Fe contribution to the spin-down conduction band. The implications of these findings for the synthesis of Sr2FeMoO6 having optimal magnetoresistance response are discussed. © 2001 American Institute of Physics.
    Original languageEnglish
    Pages (from-to)781-783
    JournalApplied Physics Letters
    Issue number6
    Publication statusPublished - 5 Feb 2001


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