Hexagonal Manganites—(RMnO3): Class (I) Multiferroics with Strong Coupling of Magnetism and Ferroelectricity
Figure 30
Left panel: second harmonic generation images of YMnO3 measured in different polarization of the incoming and SHG light (for details see [170]). The two ferroelectric domains are denoted by and the two antiferromagnetic domains are labeled , and they are distinguished in contrast, dark or bright. Right panel: domain pattern constructed from the images in the left panel. Note that ferroelectric domain walls always coincide with antiferromagnetic domain walls. Reprinted with permission from [170].
