Hexagonal Manganites—(RMnO3): Class (I) Multiferroics with Strong Coupling of Magnetism and Ferroelectricity
Figure 33
Anomalies of the magnetization defining different phase boundaries of ErMnO3 up to a field of 50 kOe. (a) versus data at various temperatures and (b) dc susceptibility on a logarithmic scale at various fields. The different curves in (b) coincide above about 50 K, but are vertically offset for better clarity. The inset to (b) shows the derivative d/d with sharp minima at and another minimum near 4 to 5 K.
