A study of the magnetic exchange interactions in SrEu2Fe2O7by151Eu Mossbauer spectroscopy
- 20 May 1981
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 14 (14) , 1985-1996
- https://doi.org/10.1088/0022-3719/14/14/009
Abstract
The 151Eu Mossbauer resonance has been used to study magnetic exchange interactions involving diamagnetic Eu3+ ions in antiferromagnetic SrEu2Fe2O7. The odd number of neighbouring magnetic ions results in a large induced magnetic flux density at the europium nucleus, and a small quadrupole effect. The experimental data are combined with a detailed calculation of the exchange and crystal-field interactions to resolve an ambiguity in the magnetic lattice as determined from neutron diffraction data, and it is concluded that the Fe3+ spins are normal to the (110) mirror planes.Keywords
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