HREM studies of ordered superstructure in PMN and PLMN ceramics

Author

Yinmei, Liu ; Chengyu, Song ; Baosong, Wen

Author_Institution

Inst. of Ceramics, Acad. Sinica, Shanghai, China

fYear

1991

fDate

33457

Firstpage

226

Lastpage

228

Abstract

Pure and La-doped lead magnesium niobate have been studied by high resolution electron microscopy combining with computer simulation. There are nanosize superstructural microdomains in the [110] HREM image of Pb(Mg_1/3Nb_2/3)O₃, and the domains grow to an extent of about 40 nm over 150 nm by 10-20% La-doping. Through the computer simulation and processing, the superstructure is confirmed as relating to the ordering on the B-sites, and an explicit description and explanation of the ordered structure and the microdomains form and growth are given

Keywords

domains; electron microscopy; ferroelectric materials; lanthanum compounds; lead compounds; physics computing; B-sites; HREM; PLMN ceramics; PMN; PMN ceramics; Pb(Mg₁3/Nb₂3/)O₃; PbLaMgO₃NbO₃; PbMgO3NbO3; computer simulation; ferroelectric; nanosize superstructural microdomains; ordered superstructure; Ceramics; Computational modeling; Computer simulation; Electron microscopy; Lead; Magnesium; Niobium compounds; Scanning electron microscopy; Superlattices; Transmission electron microscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on

Conference_Location

University Park, PA

Print_ISBN

0-7803-1847-1

Type

conf

DOI

10.1109/ISAF.1994.522344

Filename

522344