Title :
A correlation between bond valence and B-site ordering in perovskite lead-based compounds
Author :
Feng, Chude ; Zhao, Changlei
Author_Institution :
Inst. of Ceramics, Acad. Sinica, Shanghai, China
Abstract :
A correlation between cationic valence deviation and ordering in B-site cations is found. Larger cationic valence deviation, leading to instabilities in the crystals, could be mutually compensated by chemical ordering of B\´:B"=1:1. The larger valence deviation of B\´ and B" cations, therefore, the higher ordering of B-site cations could be considered. This result corresponds to the fact that well-ordering structure has been obtained by a suitable thermal annealing in PST and PSN and nonordering structure observed in PFN
Keywords :
bonds (chemical); crystal structure; ferroelectric ceramics; lead compounds; B-site cation ordering; PFN; PSN; PST; Pb-based compounds; bond valence; cationic valence deviation; chemical ordering; ferroelectrics; nonordering structure; perovskite; thermal annealing; well-ordering structure; Annealing; Bonding; Ceramics; Chemicals; Crystals; Dispersion; Electrostatics; Ferroelectric materials; Lattices; Lead compounds;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.942407
