All Oxide Ferromagnet/Semiconductor Epitaxial Heterostructures

A. Nielsen; A. Brandlmaier; M. Althammer; W. Kaiser; M. Opel; J. Simon; W. Mader; S. T. B. Goennenwein; R. Gross

doi:10.1063/1.2998576

All Oxide Ferromagnet/Semiconductor Epitaxial Heterostructures

Materials Science 2008-12-30 v1 Strongly Correlated Electrons

Authors: A. Nielsen , A. Brandlmaier , M. Althammer , W. Kaiser , M. Opel , J. Simon , W. Mader , S. T. B. Goennenwein , R. Gross

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Abstract

Oxide based ferromagnet/semiconductor heterostructures offer substantial advantages for spin electronics. We have grown (111) oriented Fe3O4 thin films and Fe3O4/ZnO heterostructures on ZnO(0001) and Al2O3(0001) substrates by pulsed laser deposition. High quality crystalline films with mosaic spread as small as 0.03 degree, sharp interfaces, and rms surface roughness of 0.3 nm were achieved. Magnetization measurements show clear ferromagnetic behavior of the magnetite layers with a saturation magnetization of 3.2 muB/f.u. at 300 K. Our results demonstrate that the Fe3O4/ZnO system is an intriguing and promising candidate for the realization of multi-functional heterostructures.

Keywords

thin film magnetism thin films epitaxial thin films

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@article{arxiv.0808.2245,
  title  = {All Oxide Ferromagnet/Semiconductor Epitaxial Heterostructures},
  author = {A. Nielsen and A. Brandlmaier and M. Althammer and W. Kaiser and M. Opel and J. Simon and W. Mader and S. T. B. Goennenwein and R. Gross},
  journal= {arXiv preprint arXiv:0808.2245},
  year   = {2008}
}

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4 pages, 3 figures

All Oxide Ferromagnet/Semiconductor Epitaxial Heterostructures

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