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Article Dans Une Revue Superlattices and Microstructures Année : 2021

Structural behaviour of BiFeO3/SrRuO3 superlattices: An X-ray diffraction and Raman spectroscopy investigation

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Résumé

Epitaxial BiFeO3/SrRuO3 superlattices have been grown by pulsed laser deposition on a (001) oriented LaAlO3 substrate and probed by X-ray diffraction and Raman spectroscopy. To investigate the structural competition between rhombohedral BiFeO3 and orthorhombic SrRuO3 the total thickness of all SLs was kept constant and the bilayer thickness (period) ? was varied. The interlayer strain effects are therefore tuned from large strain effects (short ? period) to quasirelaxed structure (large ?). A complementary investigation using X-ray diffraction and phonon dynamics hints to change from a rhombohedral to a tetragonal structure in the superlattices with the increase of the interlayer strain effect.

Dates et versions

hal-03627234 , version 1 (01-04-2022)

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S. Yousfi, M. El Marssi, H. Bouyanfif. Structural behaviour of BiFeO3/SrRuO3 superlattices: An X-ray diffraction and Raman spectroscopy investigation. Superlattices and Microstructures, 2021, 156, ⟨10.1016/j.spmi.2021.106983⟩. ⟨hal-03627234⟩
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