Title :
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
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(Mg1/3Nb2/3)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;
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
DOI :
10.1109/ISAF.1994.522344
