The Microstructure and Dielectric Properties of SrTiO3 Modified 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 Ceramics

Jing Song Liu; Tao Li; Hui Qin Li; You Chao Xu; Ji Qiang Yu

doi:10.4028/www.scientific.net/MSF.687.433

Paper Titles

Study on the Effects of (Bi_1/2Na_1/2)TiO₃ Content on the Curie Temperature of (Bi_1/2Na_1/2)TiO₃-BaTiO₃ PTCR Ceramics
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The Dielectric Characteristics of Sr and Mg Doped CCTO Ceramics
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The Effect of Caor Ba Substitution on the Properties in Bi_0.87La_0.05B_0.08FeO₃ (B＝Ca, Ba) Ceramics
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The Influence of Doped MgF₂ on the Dielectric Properties of Barium Strontium Titanate Ceramics
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The Microstructure and Dielectric Properties of SrTiO₃Modified 0.9Pb(Mg_1/3Nb_2/3)O₃-0.1PbTiO₃ Ceramics
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The Nd-Doping Effect on Dielectric Abnormity of BiFeO₃ Ceramics below the Néel Temperature
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Vickers Hardness Studies on (001) and (110) Faces of DAST Crystal
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High Stability of Dielectric Permittivity for Pb(Mg_1/3Nb_2/3)O₃-Based Composite Ceramics Prepared by Coating Method
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Gold Thin Film as Transition Layer in Electrode Design of Na₂O−PbO−Nb₂O₅−SiO₂ Glass-Ceramic Capacitors
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HomeMaterials Science ForumMaterials Science Forum Vol. 687The Microstructure and Dielectric Properties of...

The Microstructure and Dielectric Properties of SrTiO₃Modified 0.9Pb(Mg_1/3Nb_2/3)O₃-0.1PbTiO₃ Ceramics

Abstract:

The microstructure and dielectric properties of ferroelectric solutions which is formulated with (1-x)[0.9Pb(Mg_1/3Nb_2/3)O₃-0.1PbTiO₃]-x mol% SrTiO₃ (x=0, 1, 3 and 5) have been investigated. The ceramics was fabricated by a modified columbite route sintered at 1200 °C. The effects of dopants on microstructure, maximum dielectric constant (ε_m) and diffuseness of the phase transition, etc. have been studied. It is found that the maximum permittivity (ε_m) increases to 24968 for the ST-doped (1 mol %) sample, subsequently decreases with ST addition and its corresponding phase-transition-temperature (T_m) shifts to the lower temperature. The variation of ε_m is caused by the decrease of polar nano-region size, increase of the fluctuation of the component and the increase of the effective spontaneous polarization. The enhancement of relaxor behavior in the PMN-PT sample is explained by the decrease of FE/AFE coupling.

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Materials Science Forum (Volume 687)

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433-438

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https://doi.org/10.4028/www.scientific.net/MSF.687.433

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June 2011

Authors:

Jing Song Liu, Tao Li, Hui Qin Li, You Chao Xu, Ji Qiang Yu

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Dielectric Property, Diffuse Phase Transition, Relaxor Ferroelectric

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