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Ferroelectrics Volume 331, 2006 - Issue 1
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Original Articles

(1-x)PMN-xPT Ceramics Prepared by Conventional and Modified Columbite Route: Effect on Electrical Properties

A. A. Cavalheiro Instituto de Biociências de Botucatu, Depto de Química e Bioquímica–Universidade Estadual Paulista, Distrito de Rubião Junior, s/n CEP 18.618-000 CP 510, Botucatu, SP, Brasil
,
J. C. Bruno Instituto de Biociências de Botucatu, Depto de Química e Bioquímica–Universidade Estadual Paulista, Distrito de Rubião Junior, s/n CEP 18.618-000 CP 510, Botucatu, SP, Brasil
,
M. A. Zaghete Instituto de Biociências de Botucatu, Depto de Química e Bioquímica–Universidade Estadual Paulista, Distrito de Rubião Junior, s/n CEP 18.618-000 CP 510, Botucatu, SP, Brasil
&
J. A. Varela Instituto de Biociências de Botucatu, Depto de Química e Bioquímica–Universidade Estadual Paulista, Distrito de Rubião Junior, s/n CEP 18.618-000 CP 510, Botucatu, SP, Brasil
Pages 121-128 | Received 15 Nov 2005, Accepted 20 Dec 2005, Published online: 09 Mar 2011
 
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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, with x assuming the values 0.10, 0.28, and 0.35. If compared to conventional method, the Ti-modified columbite route, which is characterized by higher B cation homogeneity, leads to PMN-PT powders and ceramics with lower content of PNT pyrochlore phase and, for 0.65PMN-0.35PT composition, minor amount of tetragonal phase is found. Conclusively, PMN-PT ceramics obtained by modified route favors B cations homogeneity, enhancing the dielectric, ferroelectric and piezoelectric properties.

Acknowledgments

The authors thank FAPESP and Capes Brazilian agencies for their financial support.

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Related Research Data

Piezoelectric properties of 〈001〉 textured Pb(Mg1/3Nb2/3)O3–PbTiO3 ceramics
Source: AIP Publishing
Low-Temperature Reactive Sintering of 0.65PMN·0.35PT
Source: Wiley
Structural effects of Li and K additives on the columbite precursor and 0.9PMN–0.1PT powders
Source: Elsevier BV
X-Band EPR Studies of Ferroelectric Lead Titanate (PT), Piezoelectric Lead Magnesium Niobate (PMN), and PMN/PT Powders at 10 and 85 K
Source: American Chemical Society (ACS)
Single‐Calcination Synthesis of Pyrochlore‐Free 0.9Pb(Mg1/3Nb2/3)O3–0.1PbTiO3 and Pb(Mg1/3Nb2/3)O3 Ceramics Using a Coating Method
Source: Wiley
Temperature dependence of piezoelectric properties of PMN-PT and PZN-PT single crystals
Source: EDP Sciences
Fabrication of perovskite lead magnesium niobate
Source: Elsevier BV

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