Long-range ferromagnetic order in LaCoO3-delta epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering

@article{Mehta2015LongrangeFO,
  title={Long-range ferromagnetic order in LaCoO3-delta epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering},
  author={V. Mehta and N. Bi{\vs}kup and C. Jenkins and E. Arenholz and M. Varela and Y. Suzuki},
  journal={Physical Review B},
  year={2015},
  volume={91},
  pages={144418}
}
We demonstrate that a combination of electronic structure modification and oxygen vacancy ordering can stabilize a long-range ferromagnetic ground state in epitaxial LaCoO_(3) thin films. Highest saturation magnetization values are found in the thin films in tension on SrTiO_(3) and (La,Sr)(Al,Ta)O_(3) substrates and the lowest values are found in thin films in compression on LaAlO_(3). Electron microscopy reveals oxygen vacancy ordering to varying degrees in all samples, although samples with… Expand
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