Significant Structure Modulation in Polar Antiferromagnet FeCoMo₃O₈

Abstract

with magnetic and electric polarization coming from distinct sources. [4] The discovery of rare-earth manganite oxides enabled the development of type-IImultiferroic materials with symmetry-breaking magnetic structures. [5,6] Nonetheless, their ME is still too weak for widespread application due to the high-order nature of the ME coupling in these materials. [7][8][9] Recently, giant ME coupling was probed in compound Fe 2 Mo 3 O 8 . [10,11] The distinction ME coupling coefficient reached an order of À10 4 ps/m during a magnetic phase transition driven by magnetic field, and a large electric polarization of about 0.33 μC cm À2 is accumulated accompanied by a magnetic disordering-ordering transition. [11] Concurrently, large ME coupling was also discovered in the compounds with a structure analogous to Fe