The ferroelectric properties in a magnetic field (H) of varying magnitude and direction have been investigated for the triangular-lattice helimagnet CuFe1-xGaxO2 (x=0.035). The in-plane H was found to induce the rearrangement of six possible multiferroic domains. Upon every 60° rotation of in-plane H around the c axis, a unique 120° flop of electric polarization occurs as a result of the switch of the helical magnetic q vector. The chirality of the spin helix is always conserved upon the q flop. The possible origin is discussed in light of the stable structure of the multiferroic domain wall.
ASJC Scopus subject areas
- Physics and Astronomy(all)