Strain and magnetic field induced spin‐structure transitions in multiferroic BiFeO3
- Agbelele, A
- Sando, D
- Toulouse, C
- Paillard, C
- Johnson, RD
- Rüffer, R
- Popkov, AF
- Carrétéro, C
- Rovillain, P
- Le Breton, J-M
- Dkhil, B
- Cazayous, M
- Gallais, Y
- Méasson, M-A
- Sacuto, A
- Manuel, P
- Zvezdin, AK
- Barthélémy, A
- Juraszek, J
- Bibes, M
DOIAbstract
Researchers explore the combined effects of strain and magnetic field on the spin order of BiFeO 3 (BFO). The 57 Fe substitution in our films allows us to establish the magnetic properties by exploiting the uncommon, yet powerful technique of nuclear resonant scattering (NRS) of synchrotron radiation. We find that in BFO films which display cycloidal order, the critical field is sharply reduced when compared to the bulk. Neutron diffraction experiments on one such film indicate that the cycloid period is larger by around 20 nm in this specimen than in the bulk
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