Control of ferroelectricity and magnetism in multi-ferroic BiFeO

3 by epitaxial strain

by D. Sando, A. Agbelele, C. Daumont, D. Rahmedov, W. Ren, I. C. Infante, S. Lisenkov, S. Prosandeev, S. Fusil, E. Jacquet, C. Carrétéro, S. Petit, M. Cazayous,

J. Juraszek, J.-M. Le Breton, L. Bellaiche, B. Dkhil, A. Barthélémy, and M. Bibes

Philosophical Transactions AVolume 372(2009):20120438

February 28, 2014

©2014 by The Royal Society

Effective Hamiltonian results evaluated in a BFO film, at 300 K and as a function of misfit strain; (a) tetragonality (c/a ratio) and (b) antiferrodistortive angles ω along the x-, y- and z-axes (ωX and

ωY, red line and ωZ, blue line).

D. Sando et al. Phil. Trans. R. Soc. A 2014;372:20120438

©2014 by The Royal Society

Measured (squares) remanent polarization versus strain and calculated components of the remanent polarization vector.

D. Sando et al. Phil. Trans. R. Soc. A 2014;372:20120438

©2014 by The Royal Society

Conversion electron Mössbauer spectra at 295 K for two BFO films; (a) one on GSO and (b) the other on PSO. The symbols correspond to the data, the red lines to a fit with a cycloidal model

and the blue line to a fit with an antiferromagnetic (AF) order.

D. Sando et al. Phil. Trans. R. Soc. A 2014;372:20120438

©2014 by The Royal Society