Comparative study on phase development of lead titanate powders

2002 ◽  
Vol 52 (4-5) ◽  
pp. 304-312 ◽  
Author(s):  
Jiye Fang ◽  
John Wang ◽  
Leong-Ming Gan ◽  
Ser-Choon Ng
Keyword(s):  
Comparative Study ◽  
Lead Titanate ◽  
Phase Development

Phase development in Si modified sol-gel-derived lead titanate

1993 ◽  
Vol 8 (7) ◽  
pp. 1712-1720 ◽  
Author(s):  
John S. Wright ◽  
Lorraine Falter Francis
Keyword(s):  
Lead Titanate ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Pyrochlore Phase ◽  
Lattice Parameter ◽  
X Ray Diffraction ◽  
Phase Development ◽  
Higher Temperature ◽  
Si Content ◽  
Si Addition

Sol-gel methods were used to prepare chemically modified lead titanate (PT) powders. A PT alkoxide solution was synthesized and doped with Si (2–12 mole%) or with equimolar amounts (2–12 mole%) of Si and Pb through the addition of Si and Pb–Si alkoxide solutions, respectively. PT alkoxide solutions were also prepared with excess Pb and Ti (7 and 10 mole%). Gels were prepared through controlled additions of water. Crystalline phase development of gel-derived powders with heat treatment (400–700 °C) was studied using x-ray diffraction (XRD) and differential thermal analysis (DTA). While PT powders without added Si crystallized directly into a perovskite phase, Si modified materials crystallized first into a pyrochlore phase and at a higher temperature transformed into perovskite. The pyrochlore lattice parameter and the temperature for the transformation to perovskite increased with Si content. In all cases, the crystal structure of the final perovskite phase was not affected by the Si addition. The effect of Si on phase development and mechanisms of transformation is discussed.

Pyrochlore-perovskite phase development of sol-gel derived modified lead titanate thin films

1995 ◽  
Vol 29 (1-4) ◽  
pp. 197-200 ◽  
Author(s):  
M.L. Calzada ◽  
J. Mendiola ◽  
F. Carmona ◽  
R. Sirera
Keyword(s):  
Thin Films ◽  
Lead Titanate ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Phase Development

Flux Growth and Dielectric Properties of Relaxor-Based Pb(In1/2Nb1/2)O3-PbTiO3 Single Crystals

2005 ◽  
Vol 475-479 ◽  
pp. 4179-4182 ◽  
Author(s):  
Hui Qing Fan
Keyword(s):  
Electron Microscopy ◽  
Dielectric Properties ◽  
Single Crystals ◽  
Lead Titanate ◽  
X Ray Diffraction ◽  
Flux Method ◽  
X Ray ◽  
Phase Development ◽  
Transmission Electron ◽  
Scanning Electron

Relaxor-based piezoelectric single crystals of lead indium niobate-lead titanate (0.63Pb(In1/2Nb1/2)-0.37PbTiO3, abbreviated as PIN-PT), in the vicinity of the morphotropic phase boundary, were prepared by a flux method. The compositions of the flux, Pb3O4 or PbF2, play different role in perovskite stability and phase development. Thus, pure perovskite PIN-PT single crystals with the size of 2~5 mm were obtained by using Pb3O4 flux as well as a small amount of B2O3 additive. The microstructure and the phase development of the as-grown single crystals were investigated by scanning electron microscopy and transmission electron microscopy and X-ray diffraction. Furthermore, the dielectric properties of the <100>-oriented PIN-PT single crystals were measured in the temperature range between 20°C and 400°C.

scholarly journals Phase Development in Sol-Gel Derived Lead Titanate : A XAS Study

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-1161-C2-1162
Author(s):  
G. Antonioli ◽  
D. Bersani ◽  
P. P. Lottici ◽  
I. Manzini ◽  
S. Bassi ◽  
...  
Keyword(s):  
Lead Titanate ◽  
Sol Gel ◽  
Phase Development

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution

Structural and functional properties of Escherichia coli-derived nucleoplasmin A comparative study of recombinant and natural proteins

2001 ◽  
Vol 268 (6) ◽  
pp. 1739-1748
Author(s):  
Aitor Hierro ◽  
Jesus M. Arizmendi ◽  
Javier De Las Rivas ◽  
M. Angeles Urbaneja ◽  
Adelina Prado ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Comparative Study ◽  
Functional Properties ◽  
Structural And Functional Properties
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