Magnetism of NiMn2O4-Fe3O4 Spinel Interfaces

B. B. Nelson-Cheeseman; R. V. Chopdekar; J. S. Bettinger; E. Arenholz; Y. Suzuki

doi:10.1063/1.2838320

Magnetism of NiMn2O4-Fe3O4 Spinel Interfaces

Strongly Correlated Electrons 2008-09-26 v2 Materials Science

Authors: B. B. Nelson-Cheeseman , R. V. Chopdekar , J. S. Bettinger , E. Arenholz , Y. Suzuki

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Abstract

We investigate the magnetic properties of the isostructural spinel-spinel interface of NiMn2O4(NMO)-Fe3O4. Although the magnetic transition temperature of the NMO film is preserved, both bulk and interface sensitive measurements demonstrate that the interface exhibits strong interfacial magnetic coupling up to room temperature. While NMO thin films have a ferrimagnetic transition temperature of 60K, both NiFe2O4 and MnFe2O4 are ferrimagnetic at room temperature. Our experimental results suggest that these magnetic properties arise from a thin interdiffused region of (Fe,Mn,Ni)3O4 at the interface leading to Mn and Ni magnetic properties similar to MnFe2O4 and NiFe2O4.

Keywords

spinel interfaces nimn2o4 fe3o4 interfacial magnetic coupling ferrimagnetic transition interdiffusion room temperature magnetism

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@article{arxiv.0709.3518,
  title  = {Magnetism of NiMn2O4-Fe3O4 Spinel Interfaces},
  author = {B. B. Nelson-Cheeseman and R. V. Chopdekar and J. S. Bettinger and E. Arenholz and Y. Suzuki},
  journal= {arXiv preprint arXiv:0709.3518},
  year   = {2008}
}

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Magnetism of NiMn2O4-Fe3O4 Spinel Interfaces

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