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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Microtructure and dielectric properties of (1-x)Pb(Yb_(1/2)Ta_(1/2))O_3-xPb(Fe_(1/2)Ta_(1/2))O_3, 0 ≤ x ≤ 0.2 solid solution ceramics
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Microtructure and dielectric properties of (1-x)Pb(Yb_(1/2)Ta_(1/2))O_3-xPb(Fe_(1/2)Ta_(1/2))O_3, 0 ≤ x ≤ 0.2 solid solution ceramics

机译:(1-x)Pb(Yb_(1/2)Ta_(1/2))O_3-xPb(Fe_(1/2)Ta_(1/2))O_3的微观结构和介电性能,0≤x≤0.2固体溶液陶瓷

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摘要

Polycrystalline samples of (1-x)Pb(Yb_(1/2)Ta_(1/2))O_3-xPb(Fe_(1/2)Ta_(1/2))O_3 with x = 0.0, 0.1, 0.13, 0.15, 0.18 and 0.2 are prepared by solid state reaction method. The formation and structural changes are identified by X-ray diffraction studies. A uniform distribution of grains is observed from the microstructure by scanning electron microscopy. The dielectric measurement of the compounds is carried out at 1-200 kHz in the temperature range -100 to 300℃. The substitution of Fe~(3+) ion at Yb~(3+) sites of Pb(Yb_(1/2)Ta_(1/2))O_3 significantly enhances the dielectric constant value, increases the diffuseness in the mode of phase transition and lowers the transition temperature. A detailed analysis of the dielectric response of the compounds is given in conjecture with their structural data.
机译:(1-x)Pb(Yb_(1/2)Ta_(1/2))O_3-xPb(Fe_(1/2)Ta_(1/2))O_3的多晶样品,x = 0.0、0.1、0.13,通过固态反应方法制备0.15、0.18和0.2。通过X射线衍射研究确定了形成和结构变化。通过扫描电子显微镜从微观结构观察到晶粒的均匀分布。化合物的介电测量是在-100至300℃的温度范围内于1-200 kHz进行的。 Fe〜(3+)离子在Pb(Yb_(1/2)Ta_(1/2))O_3的Yb〜(3+)位上的取代显着提高了介电常数值,增加了相态下的扩散转变并降低转变温度。推测化合物的介电响应及其结构数据。

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