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Influence of synthesis and processing parameters of the columbite precursor on the amount of Perovskite PMN
(ABM, ABC, ABPol, 1999-10)
Columbite route for synthesis of P3MgNb2O9 (PMN) allows the suppression of secondary phases in PMN powders. These phases, having low dielectric constant, affect negatively the dielectric properties of PMN ceramics. Aiming ...
Influence of the LiNbO3 and KNbO3 seeds on the sintering and electrical properties of PMN ceramic
(Taylor & Francis Ltd, 2002-01-01)
The effect of LiNbO3 and KNbO3 seeds on the microstructure and dielectric characteristics of PMN ceramic prepared by columbite route have been investigated with the addition of 0, 1, and 2-wt% of seeds. X-ray diffraction, ...
Influence of the LiNbO3 and KNbO3 seeds on the sintering and electrical properties of PMN ceramic
(Taylor & Francis Ltd, 2002-01-01)
The effect of LiNbO3 and KNbO3 seeds on the microstructure and dielectric characteristics of PMN ceramic prepared by columbite route have been investigated with the addition of 0, 1, and 2-wt% of seeds. X-ray diffraction, ...
(1-x)PMN-xPT ceramics prepared by conventional and modified columbite route: Effect on electrical properties
(Taylor & Francis Ltd, 2006-01-01)
This study aims to demonstrate how the chemical homogeneity of B cations affects the microstructure and electrical responses of (1-x) PMN-xPT ceramics. Two methodologies were employed to synthesize three different compositions, ...
(1-x)PMN-xPT ceramics prepared by conventional and modified columbite route: Effect on electrical properties
(Taylor & Francis Ltd, 2006-01-01)
This study aims to demonstrate how the chemical homogeneity of B cations affects the microstructure and electrical responses of (1-x) PMN-xPT ceramics. Two methodologies were employed to synthesize three different compositions, ...
Characterization of the columbite precursor and (1-x)PMN-xPT powders prepared by Ti-modified columbite route
(Taylor & Francis Ltd, 2006-01-01)
This study proposes to synthesize (1-x)PMN-xPT powders, where 0.10 < x < 0.45, using the T-modified columbite route. This methodology consists in the preparation of the MNT columbite precursor via the polymeric precursor ...
Characterization of the columbite precursor and (1-x)PMN-xPT powders prepared by Ti-modified columbite route
(Taylor & Francis Ltd, 2006-01-01)
This study proposes to synthesize (1-x)PMN-xPT powders, where 0.10 < x < 0.45, using the T-modified columbite route. This methodology consists in the preparation of the MNT columbite precursor via the polymeric precursor ...
Seeding of PMN powders made by the Pechini method
(Elsevier B.V., 2001-01-01)
The partial oxalate method, with the columbite route, associated with the Pechini method, was used to obtain a very fine ceramic powder at low temperature. Using this route it was possible to obtain a very reactive powder ...
Preparation of pyrochlore-free PMN by an alternative chemical method
(Taylor & Francis Ltd, 2006-01-01)
This work reports the synthesis of the MgNb(2)O(6) and the ferroelectric lead magnesium niobate Pb(Mg(1/3)Nb(2/3))O(3) (PMN) using fine precursor powders obtained from a chemical Oxide Precursor Method (OPM). To obtain ...
Preparation of pyrochlore-free PMN by an alternative chemical method
(Taylor & Francis Ltd, 2006-01-01)
This work reports the synthesis of the MgNb(2)O(6) and the ferroelectric lead magnesium niobate Pb(Mg(1/3)Nb(2/3))O(3) (PMN) using fine precursor powders obtained from a chemical Oxide Precursor Method (OPM). To obtain ...