Cycloidal magnetism driven ferroelectricity in double tungstate LiFe(WO${}_4$)${}_2$

Meifeng Liu, Lingfang Lin, Yang Zhang +12

Tungstates $A$WO${}_4$ with the wolframite structure characterized by the $A$O${}_6$ octahedral zigzag chains along the $c$-axis, can be magnetic if $A$=Mn, Fe, Co, Cu, Ni. Among them,…