Observation of Ferroelastic and Ferroelectric Domains in AgNbO_(3) Single Crystal  

作　　者：Wei Zhao Zhengqian Fu Jianming Deng Song Li Yifeng Han Man-Rong Li Xueyun Wang Jiawang Hong 赵威;傅正钱;邓建明;李松;韩艺丰;李满荣;王学云;洪家旺(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;The State Key Lab of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;Key Laboratory of Inorganic Functional MRRaterials and Devices,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education,School of Chemistry,Sun Yat-Sen University,Guangzhou 510275,China)

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China [2]The State Key Lab of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China [3]Key Laboratory of Inorganic Functional MRRaterials and Devices,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China [4]Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education,School of Chemistry,Sun Yat-Sen University,Guangzhou 510275,China

出　　处：《Chinese Physics Letters》2021年第3期107-110,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.11572040,11604011 and 51972028);the National Key Research and Development Program of China(Grant No.2019YFA0307900);Beijing Natural Science Foundation(Grant No.Z190011);the Technological Innovation Project of Beijing Institute of technology。

摘　　要：Compared to AgNbO_(3) based ceramics, the experimental investigations on the single crystalline AgNbO_(3), especially the ground state and ferroic domain structures, are not on the same level. Here, based on successfully synthesized AgNbO_(3) single crystal using a flux method, we observed the coexistence of ferroelastic and ferroelectric domain structures by a combination study of polarized light microscopy and piezoresponse force microscopy.This finding may provide a new aspect for studying AgNbO_(3). The result also suggests a weak electromechanical response from the ferroelectric phase of AgNbO_(3), which is also supported by the transmission electron microscope characterization. Our results reveal that the AgNbO_(3) single crystal is in a polar ferroelectric phase at room temperature, clarifying its ground state which is controversial from the AgNbO_(3) ceramic materials.

关 键 词：CERAMICS CERAMIC FERROELECTRIC 

分 类 号：TQ131.22[化学工程—无机化工] TB34[一般工业技术—材料科学与工程]