Low temperature synthesis of ultrafine Pb(Zr,Ti)O3 powder by sol-gel combustion
Creators
- 1. Max-Planck-Institut fuer Metallforschung, Pulvermetallurgisches Laboratorium und Institut fuer Nichtmetallische Anorganische Materialien, Universitaet Stuttgart, Heisenbergstrasse 5, 70569 Stuttgart (Germany)
Description
Lead zirconate titanate powders are derived from a novel aqueous-based citrate-nitrate/oxynitrate sol-gel combustion process. Aqueous solutions of metal nitrates or oxynitrates are transformed into gels with citric acid under heating. The received gels undergo a self-propagating combustion reaction on heating to 180 degree C and subsequently yield voluminous ashes. These ashes form single phase perovskite Pb(Zr0.53Ti0.47)O3 powder with a specific surface area of 8m2/g upon calcination at 550 degree C. The ashes show a homogeneous distribution of lead, zirconium, and titanium ions which guarantees short diffusion paths in solid state formation of PZT perovskite. The redox behavior of the gels was studied with the help of DTA experiments. Powders are characterized in terms of XRD, SEM, and EDX analysis. copyright 1997 Materials Research Society
Additional details
Publishing Information
- Journal Title
- Journal of Materials Research
- Journal Volume
- 12
- Journal Issue
- 10
- Journal Page Range
- p. 2518-2521.
- ISSN
- 0884-2914
- CODEN
- JMREEE
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 29021280
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CHEMICAL PREPARATION; DIELECTRIC MATERIALS; LEAD OXIDES; PARTICLE SIZE; POWDERS; SOL-GEL PROCESS; SOLID SOLUTIONS; TEMPERATURE RANGE 0400-1000 K; TITANIUM OXIDES; ZIRCONIUM OXIDES
- Descriptors DEC
- CHALCOGENIDES; DISPERSIONS; HOMOGENEOUS MIXTURES; LEAD COMPOUNDS; MATERIALS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; SIZE; SOLUTIONS; SYNTHESIS; TEMPERATURE RANGE; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS