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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Dielectric and ferroelectric properties of Pb(Ni_(1/3)Nb_(2/3))O_3-Pb(Zn_(1/3)Nb_(2/3))O_3-PbTiO_3 ternary ceramics
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Dielectric and ferroelectric properties of Pb(Ni_(1/3)Nb_(2/3))O_3-Pb(Zn_(1/3)Nb_(2/3))O_3-PbTiO_3 ternary ceramics

机译：Pb（Ni_（1/3）Nb_（2/3））O_3-Pb（Zn_（1/3）Nb_（2/3））O_3-PbTiO_3三元陶瓷的介电和铁电性能

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摘要

Ternary ceramics with the type of (1 - x)(0.64PNN-0.36PT)-x(0.91PZN-0.09PT) (x = 0-0.82) were synthesized by the columbite precursor method. X-ray diffraction results demonstrate that all the samples lie within the morphotropic phase boundary (MPB) region in the pure perovskite structure except for the composition with x = 0.82. The dielectric and ferroelectric properties of compositions with x = 0-0.75 were investigated in detail. All the tested compositions show dielectric behaviors of frequency dispersion and diffuse phase transition. The Ni-rich compositions exhibit superior dielectric and ferroelectric properties to those of Ni-poor ones. The composition with x = 0.15 has the maximum peak dielectric constant (23, 410) at 1 kHz and the maximum remnant polarization (14.8 μC/cm~2) with the driving electric field at lOkV/cm. The variation of peak dielectric constant with x can be explained in terms of the product rate of the polar microregion in the materials.
机译：通过哥伦比前体方法合成了（1-x）（0.64PNN-0.36PT）-x（0.91PZN-0.09PT）（x = 0-0.82）类型的三元陶瓷。 X射线衍射结果表明，除x = 0.82的成分外，所有样品均位于纯钙钛矿结构的相变相界（MPB）区域内。详细研究了x = 0-0.75的组合物的介电和铁电性能。所有测试的组合物均表现出频率色散和扩散相变的介电性能。富镍组合物表现出比贫镍组合物优异的介电和铁电性能。 x ＝ 0.15的组合物具有在1kHz下的最大峰值介电常数（23、410）和在10kV / cm的驱动电场下的最大残余极化（14.8μC/ cm〜2）。峰值介电常数随x的变化可以用材料中极性微区的乘积率来解释。

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