http://www.cnr.it/ontology/cnr/individuo/prodotto/ID43413
Synthesis of La and Nb doped PZT powder by the gel-combustion method (Articolo in rivista)
- Type
- Label
- Synthesis of La and Nb doped PZT powder by the gel-combustion method (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0957-4484/17/6/031 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Marin Cernea; Giulia Montanari; Carmen Galassi; Anna Luisa Costa (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Cernea: National Institute for Materials Physics, PO Box MG-7, Bucharest, RO-77125, Romania
Galassi Costa, Montanari: CNR-ISTEC (literal)
- Titolo
- Synthesis of La and Nb doped PZT powder by the gel-combustion method (literal)
- Abstract
- Lanthanum and niobium doped PZT with composition
(Pb0.93La0.07)(Zr0.60Ti0.40)0.9825Nb0.0175O3 (PZTLN) was prepared by the
gel-combustion method. A precursor sol was obtained from lead nitrate,
zirconyl nitrate, lanthanum oxide, peroxo-citrato-niobium and a
peroxo-citrate complex of titanium isopropoxide as starting precursors.
Various molar ratios of citratenitrate (CA/NO3- 1.3, 0.36 and 0.09) were
used to prepare very fine powders of PZTLN. The gels resulting from these
sols were transformed into powders by an autocombustion process at
400 C. The powders consisted of rhombohedral PZT (PbZr0.60Ti0.40O3),
pyrochlore (Pb2Ti2O6) and lead carbonate (Pb2O CO3) phases. The pure
rhombohedral phase is found in PZTLN pellets sintered at 1100 C for all
citratenitrate ratios. Titanium and niobium precursors were modified with
peroxo radicals. During the gelcombustion reaction, the temperature of the
gel increases, leading to lead evaporation. The loss of lead as well as the
particle size increases as the CANO3 ratio decreases. The smallest grained powder (about 50 nm) was obtained with the ratio CA/NO3- equal to 0.09. (literal)
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