Hexagonal Manganites—(RMnO₃): Class (I) Multiferroics with Strong Coupling of Magnetism and Ferroelectricity

Figure 26

(a) Suppression of second harmonic generation intensities in HoMnO₃ by external electric fields, indicating a major change of the Mn spin order. (b) Faraday rotation in the absence of electric fields. (c) Change of the Faraday rotation angle in electric fields of opposite polarities. Reprinted with permission from [139].

(a)

(b)

(c)