PREPARATION OF SINGLE-PHASE PB(MG1 3NB2/3)O3 SAMPLES UTILIZING INFORMATION FROM SOLUBILITY RELATIONSHIPS IN THE PB-MG-NB-CITRIC ACID-H2O SYSTEM/

Authors
CHOY JH HAN YS SONG SW CHANG SH
Citation
Jh. Choy et al., PREPARATION OF SINGLE-PHASE PB(MG1 3NB2/3)O3 SAMPLES UTILIZING INFORMATION FROM SOLUBILITY RELATIONSHIPS IN THE PB-MG-NB-CITRIC ACID-H2O SYSTEM/, Journal of materials chemistry, 4(8), 1994, pp. 1271-1274
Citations number
23
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry → ACNP
ISSN journal
09599428
Volume
4
Issue
8
Year of publication
1994
Pages
1271 - 1274
Database
ISI
SICI code
0959-9428(1994)4:8<1271:POSP3S>2.0.ZU;2-2
Abstract
The optimum pH for preparing single-phase Pb(Mg1/3Nb2/3)O3 (PMN) powde r can be estimated from the solubility vs. pH diagrams for the corresp onding metal ions in hydroxide, carbonate and citrate media. The homog eneous and stoichiometric citrate PMN precursor could be prepared from the system Pb-Mg-Nb-citric acid-H2O by adjusting the pH of the soluti on to 6. Ultrafine (0.05-0.3 mum) and stoichiometric PMN powder could be obtained through the thermal decomposition of the citrate precursor at the relatively low temperature of 900-degrees-C.