Fig. 1: LFO bulk crystal and thin films under various substrates.

a Bulk orthorhombic lattice structure of LaFeO3 with red, green and blue spheres corresponding to Oxygen, Lanthanum and Iron atoms, respectively. AF-axis is highlighted with yellow arrows. b ω-2θ X-ray diffraction measurements performed on LFO films grown under different epitaxial strain conditions (from compressive to tensile strain). The experimental curves are spaced by a constant value on this logarithmic scale. The LFO diffraction peaks are marked by blue lines.