Suppressing the ferroelectric switching barrier in hybrid improper ferroelectrics  

作　　者：Shutong Li Turan Birol 

机构地区：[1]Department of Chemical Engineering and Materials Science,University of Minnesota,Minneapolis,MN 55455,USA

出　　处：《npj Computational Materials》2020年第1期287-296,共10页计算材料学（英文）

基　　金：This work was supported primarily by the National Science Foundation through the University of Minnesota MRSEC under Award Number DMR-2011401.

摘　　要：Integration of ferroelectric materials into novel technological applications requires low coercive field materials,and consequently,design strategies to reduce the ferroelectric switching barriers.In this first principles study,we show that biaxial strain,which has a strong effect on the ferroelectric ground states,can also be used to tune the switching barrier of hybrid improper ferroelectric Ruddlesden–Popper oxides.We identify the region of the strain-tolerance factor phase diagram where this intrinsic barrier is suppressed,and show that it can be explained in relation to strain-induced phase transitions to nonpolar phases.

关 键 词：FERROELECTRIC TRANSITIONS explained 

分 类 号：O48[理学—固体物理]