Strain analysis of multiferroic BiFeO3-CoFe2O 4 nanostructures by Raman scattering

O. Chaix-Pluchery, C. Cochard, P. Jadhav, J. Kreisel (Lead / Corresponding author), N. Dix, F. Sánchez, J. Fontcuberta

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Abstract

We report a Raman scattering investigation of columnar BiFeO 3-CoFe2O4 (BFO-CFO) epitaxial thin film nanostructures, where BFO pillars are embedded in a CFO matrix. The feasibility of a strain analysis is illustrated through an investigation of two nanostructures with different BFO-CFO ratios. We show that the CFO matrix presents the same strain state in both nanostructures, while the strain state of the BFO pillars depends on the BFO/CFO ratio with an increasing tensile strain along the out-of-plane direction with decreasing BFO content. Our results demonstrate that Raman scattering allows monitoring strain states in complex 3D multiferroic pillar/matrix composites.

Original languageEnglish
Article number072901
JournalApplied Physics Letters
Volume99
Issue number7
DOIs
Publication statusPublished - 15 Aug 2011

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    Chaix-Pluchery, O., Cochard, C., Jadhav, P., Kreisel, J., Dix, N., Sánchez, F., & Fontcuberta, J. (2011). Strain analysis of multiferroic BiFeO3-CoFe2O 4 nanostructures by Raman scattering. Applied Physics Letters, 99(7), [072901]. https://doi.org/10.1063/1.3626595