%0 Journal Article %T Hexagonal Manganites¡ª(RMnO3): Class (I) Multiferroics with Strong Coupling of Magnetism and Ferroelectricity %A Bernd Lorenz %J ISRN Condensed Matter Physics %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/497073 %U http://dx.doi.org/10.1155/2013/497073