电子铁电体研究进展

电子铁电性是基于关联体系电荷有序态的一种新的物理现象。近期研究发现，这种新型铁电体通常表现出丰富的磁电性质和耦合效应，在发展可控性多功能微电子器件方面具有广阔的应用前景。本文重点介绍了电子型铁电体代表材料LuFe2O4的实验和理论研究进展，着重探讨了电荷序相变，极化机理，介电，铁电，磁电耦合等重要物理性能。随后，简要介绍了其它体系在相关问题研究中的进展情况，包括：钙钛矿体系Pr(Ca)MnO3，Fe3O4和有机材料(TMTTF)2X等。

Recent progress in electronic ferroelectricity

Electronic ferroelectricity is a novel physical phenomenon based on charge ordered state of correlated systems.Recent investigations revealed that the electronic ferroelectricity in general shows up a rich variety of magnetic and electric properties and magnetoelectric coupling e?ects;these features are considered being essentially important for the development of a new generation of multifunctional devices for microelectronics.In this paper,we will mainly report on the experimental and theoretical research progress in LuFe2O4,the electronic ferroelectrics,including charge ordering transition,electric polarization,dielectric properties and magnetoelectric coupling.In addition,we also present a brief report on the research progress in other related systems,such as Pr(Ca)MnO3,Fe3O4 and quasi-one-dimensional organic materials(TMTTF)2X.