Coercivity and nanostructure in magnetic spinel Mg(Mn,Fe)2O4

DOI PDF 被引用文献10件
  • C. L. Zhang
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • S. Yeo
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • Y. Horibe
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • Y. J. Choi
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • S. Guha
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • M. Croft
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • S.-W. Cheong
    Rutgers University Rutgers Center for Emergent Materials, , Piscataway, New Jersey 08854 and Department of Physics and Astronomy, , Piscataway, New Jersey 08854
  • S. Mori
    Osaka Prefecture University Department of Physics, , 1-1 Gakuen-cho, Sakai, Osaka 599–8531, Japan

書誌事項

公開日
2007-03-26
DOI
  • 10.1063/1.2717568
公開者
AIP Publishing

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説明

<jats:p>When Fe ions in the ferrimagnetic cubic MgFe2O4 are replaced by Jahn-Teller (JT)-active Mn ions, the structure evolves with two-step processes. For example, the quenched cubic MgMn1.5Fe0.5O4 becomes tetragonal and JT distorted with slow cooling. However, with further slow cooling, the clustering tendency of JT-distorted Mn ions induces the formation of a checkerboard nano-self-assembly consisting of Mn-rich (tetragonal, paramagnetic) and -poor (cubic, ferrimagnetic) rods. This morphological evolution accompanies a drastic modification of ferrimagnetic properties, e.g., the magnetic coercivity changes by ∼25. The nanocheckerboard assembly with ferrimagnetic nanorods with large shape anisotropy can be a platform for ultra high-density memory devices.</jats:p>

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