Sol-gel synthesis-and characterization of Pb(Mg1/3Nb2/3)O-3 (PMN) ferroelectric perovskite

Authors
Beltran, S Cordoncillo, E Escribano, P Carda, JB Coats, A West, AR
Citation
S. Beltran et al., Sol-gel synthesis-and characterization of Pb(Mg1/3Nb2/3)O-3 (PMN) ferroelectric perovskite, CHEM MATER, 12(2), 2000, pp. 400-405
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
12
Issue
2
Year of publication
2000
Pages
400 - 405
Database
ISI
SICI code
0897-4756(200002)12:2<400:SSCOP(>2.0.ZU;2-U
Abstract
The synthesis-of lead magnesium niobate perovskite by sol-gel methods has b een investigated and conditions established for preparing a transparent gel after curing at room temperature. The decomposition of the gel has been st udied by DTA/TG and XRD; crystallization of metallic Pb and a pyrochlore ph ase occur before the formation of the desired PMN phase. Compositions yield ing X-ray-pure PMN have been established. Microscopic studies show the pres ence of pure phases in some samples studied. The composition of the PMN pha se was determined by electron probe microanalysis; departures from the idea l stoichiometry occur.