  Electrical control of magnetization or magnetic control of polarization
offers an extra degree of freedom in materials possessing both electric and
magnetic dipole moments viz., magnetoelectric multiferroics. Microstructure
with polycrystalline configurations that enhances the overall
polarization/magnetization and that outperform single crystalline
configurations are identified. The characterization of local fields
corresponding to the polycrystal configuration underlines nontrivial role
played by randomness in better cross-coupling mediated by anisotropic and
asymmetric strains.
