摘要
Abstract
Among the multiferroic materials, type-II multiferroic materials where the ferroectricity is induced by the magnetism, indicate relatively strong magnetoelectric coupling. However, the critical tem-perature is generally very low in such kind of materials, and the spontaneous polarization is very small. On the other hand, the rear earth orthoferrites (RFeO3) indicate very high TN (620∼760 K), and the recent investigations have indicated the relative strong ferroelectricity at room tem-perature, and they are expected as the promising new system of room temperature multiferroic materials. In the present review, the updated progresses on multiferroic RFeO3 are reported together with the discussion on the possible multiferroic mechanisms.关键词
稀土铁氧体/磁性/铁电性/多铁性Key words
Rear earth ferrites/magnetism/ferroelectricity/multiferroic分类
数理科学
