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首页> 外文期刊>Physica, B. Condensed Matter >Effects of composition on phase structure and electrical properties of (K0.5Na0.5)(0.90)Li0.06Sr0.02Nb(1-x)SbxO3 ceramics
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Effects of composition on phase structure and electrical properties of (K0.5Na0.5)(0.90)Li0.06Sr0.02Nb(1-x)SbxO3 ceramics

机译：组成对（K0.5Na0.5）（0.90）Li0.06Sr0.02Nb（1-x）SbxO3陶瓷相结构和电性能的影响

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摘要

Lead-free (K0.5Na0.5)(0.90)Li0.06Sr0.02Nb(1-x)SbxO3 (KNLSN-Sb-x) ceramics were synthesized by ordinary sintering technique. The compositional dependence of phase structure and electrical properties of the ceramics was systematically investigated. All samples possessed pure perovskite structure, showing room temperature symmetries of orthorhombic at x < 0.01, coexistence of orthorhombic and tetragonal phases at x = 0.01, and tetragonal at 0.02 <= x <= 0.05. The temperature of the polymorphic phase transition (PPT) was shifted to lower temperature and dielectric relaxor behavior was induced by increasing Sb content. The samples near the coexistence region (x = 0.01) exhibited enhanced electrical properties: d(33)similar to 145 pC/N, k(p)similar to 38% and P-r similar to 20.4 mu C/cm(2).
机译：采用常规烧结技术合成了无铅（K0.5Na0.5）（0.90）Li0.06Sr0.02Nb（1-x）SbxO3（KNLSN-Sb-x）陶瓷。系统地研究了陶瓷的相结构和电性能的组成依赖性。所有样品均具有纯钙钛矿结构，在x <0.01时显示正交晶的室温对称性，在x = 0.01时正交晶和四方相共存，而在0.02 <= x <= 0.05时四方晶共存。将多晶相变（PPT）的温度移至较低的温度，并通过增加Sb含量诱导介电弛豫行为。共存区域（x = 0.01）附近的样品显示出增强的电性能：d（33）接近145 pC / N，k（p）接近38％，P-r接近20.4μC / cm（2）。

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