Abstract
MAGNETIC coupling of next-to-nearest neighbours through a non-magnetic anion (super-exchange) has been explained by Anderson1 by considering ‘excited states’ in which a single electron in a p-orbital of the anion is transferred to one of the neighbouring cations. Goodenough and Loeb2 have emphasized correctly that such interactions are essentially covalent and have given the name ‘semi-covalence’ to Anderson's one-electron transfer. As stressed by Goodenough and Loeb, the increase in Curie or Néel temperatures in series such as MnO-FeO-CoO-NiO, or MnO-MnS-MnSe-MnTe, is evidence for the part played by covalence in magnetic coupling.
Similar content being viewed by others
Article PDF
References
Anderson, P. W., Phys. Rev., 79, 350 (1950).
Goodenough, J. B., and Loeb, A. L., Phys. Rev., 98, 391 (1955).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
FYFE, W., VERHOOGEN, J. Covalent Super-Exchange in Solid State Physics. Nature 187, 1108 (1960). https://doi.org/10.1038/1871108a0
Issue Date:
DOI: https://doi.org/10.1038/1871108a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.