Figure 4: Electric field control of the magnetic state.

(a) The response of the Ti atom to E-field is represented pictorially as a displacement along the direction of the field distorting the Eu–Ti–Eu third NN bond alignment. (b) Presents a schematic of the experimental sample environment for the in situ XRMS measurement. The sample is mounted on a sapphire block to achieve electrical isolation and maintain good thermal conductivity. (c) A series of L-scans through the G-AFM scattered (1/2 1/2 5/2)_ETO reflection with incrementally increasing E-field strength showing the suppressive response of the AFM signature. (d) Presents a static Q plot of the magnetic scattering intensity (1/2 1/2 5/2)_ETO versus E-field with increasing and decreasing field strength. The error bars represent the s.d. (e) A plot of the first-principles DFT calculations of the energy differences between FM and G-AFM spin configurations as a function of polarization modelled upon the ETO on LSAT with a compressive strain state of −0.9% and (a⁰a⁰c⁻) octahedral symmetry³⁴. The calculation replicates the suppression of the AFM state in agreement with the experimental observation.