Abstract
Exchange bias coupling at the multiferroic- ferromagnetic interface in BiFeO3/La0.7Sr0.3MnO3 heterostructures exhibits a critical thickness for ultrathin BiFeO3 layers of 5 unit cells (2 nm). Linear dichroism measurements demonstrate the dependence on the BiFeO3 layer thickness with a strong reduction for ultrathin layers, indicating diminished antiferromagnetic ordering that prevents interfacial exchange bias coupling.
Original language | English |
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Pages (from-to) | 4739-4745 |
Number of pages | 7 |
Journal | Advanced materials |
Volume | 25 |
Issue number | 34 |
DOIs | |
Publication status | Published - 14 Sept 2013 |
Keywords
- Exchange bias
- Ferromagnet
- Interface
- Multiferroic
- Oxide heterostructures
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