Preparation of Pb(Mg1/3Nb2/3)O3 Relaxor Ferroelectric by Sol-Gel Route |
| Journal |
Key Engineering Materials (Volumes 336 - 338) |
| Volume |
High-Performance Ceramics IV |
| Edited by |
Wei Pan and Jianghong Gong |
| Pages |
46-48 |
| DOI |
10.4028/www.scientific.net/KEM.336-338.46 |
| Online since |
April, 2007 |
| Authors |
Wen Xia,
Li Hua Xu,
Han Zhang,
Jun Jun Song
|
| Keywords |
Perovskite, Pyrochlore, Sol-Gel, X-Ray Diffraction (XRD) |
| Abstract |
Without addition of any thermodynamically stable perovskite compound such as PbTiO3,
Pb(Mg1/3Nb2/3)O3 was fabricated by a new sol-gel route, and the processing parameter was studied. The
result showed that the chelating effect of ammonium citrate was relatively better than that of citric acid in
this system. When the ratio of ammonium citrate to Nb2O5 was 8.33, the colloid of Nb2O5·nH2O was in
state of transparency. The effects of heat treatment on the formation of perovskite phase of
Pb(Mg1/3Nb2/3)O3 powders were characterized by X-Ray Diffraction (XRD) method. With increasing heat
treatment temperature or holding time, pyrochlore phase turned into perovskite phase gradually, and after
second calcination, the content of perovskite phase increased significantly from 54% to 72%. |
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