Ruddlesden-Popper结构杂化非本征铁电体及其多铁性

正杂化非本征铁电性是指在具有钙钛矿结构单元的金属氧化物中由氧八面体面内旋转和面外倾侧耦合诱导出的二阶铁电序,其有望在室温强磁电耦合多铁性材料中获得重要应用,并将极大地拓展铁电体物理学的内涵和外延.本文在阐述杂化非本征铁电性物理起源及其内禀电控磁性的基础上,总结了有关Ruddlesden-Popper结构杂化非本征铁电体及多铁性的主要研究进展与面临的挑战,并展望了发展方向.

Hybrid improper ferroelectricity and multiferroic in Ruddlesden-Popper structures

Hybrid improper ferroelectricity (HIF) is a secondary ferroelectric ordering induced by the coupling between oxygen octahedral in-plane rotation and out-of-plane tilt in a metal-oxide containing the perovskite structure units. Investigation of HIF will greatly extend the connotation and denotation of ferroelectric physics and material science, and it is expected to develop the room temperature single phase multiferroic material with large polarization and strong magnetoelectric coupling, owing to its intrinsic characteristic of the electric-field control of magnetism through HIF in magnet. In the present paper, the recent primary progress of HIFs and the multiferroics with Ruddlesden-Popper structures is reviewed, and the perspective of the future development is also presented.