Figure 1
From: Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8
Magnetic transition in Fe2Mo3O8.
(a) Crystal structure of Fe2Mo3O8. Vertical lines connect the nearest Fe ions along the c axis (blue lines are longer than the red ones). (b) The Fe-O layer in the ab crystallographic plane. Thick line depicts the largest Fe-Fe magnetic coupling J. (c) Schematic view of the AFM and FRM orders. Pink arrows represent the ferrimagnetic moments of the individual Fe-O layers. (d) The AFM order, together with the calculated largest ionic shifts associated with the paramagnetic to AFM transition. The direction of the magnetically-induced ΔP is shown with a thick arrow. (e) Temperature dependence of DC magnetic susceptibility χDC in zero field-cooled (ZFC) and field-cooled (FC) processes along two crystallographic directions, parallel and perpendicular to the c axis, in μ0H = 0.2 T. (f) Specific heat anomaly at the Neel temperature. Red line represents the double Debye model fit discussed in the text. Insert: the image of as-grown Fe2Mo3O8 single crystal.
