Theory of magnetic structure and electric polarization of the Cr2BeO4 system
Bar'yakhtar V. G., Stefanovskii E. P., Yablonskii D. A.
A theory is derived for the double exchange cycloidal structures with a long period in orthorhombic antiferromagnets (space group D Ц — Pbnm). Particular attention is given to the analysis of the compound Cr2Be04. The electric polarization of this system is attributed to the nonuniform magnetoelectric effect.