This study reports on the nature of electrical transport and role of structural changes induced by different type and content of TMO in Ag-containing glasses of xTMO-(30-0.5x)Ag₂O-(30-0.5x)ZnO

40P₂O₅ (TMO = MoO₃/WO₃, 0 ≤ x ≤ 60 mol%) composition. Raman spectra show clustering of WO₆ units in glasses with high WO₃ content while the addition of MoO₃ induces a gradual change of MoO₆ octahedra to MoO₄ tetrahedra both being cross-linked with phosphate units without clustering. For WO₃ glasses, minimum in DC conductivity is observed at 30–40 mol% of WO₃ for temperatures from 303 to 513 K, followed by an increase in conductivity with further WO₃ addition due to an increase in polaronic contribution. Observed turnover suggests a distinct transition from predominantly ionic to predominantly polaronic transport. Contrary, for MoO₃ glasses conductivity decreases in the whole mixed compositional range indicating the nature of transport is dominated by ionic component throughout the measured temperature range. A comparative study of Ag⁺, Li⁺, Na⁺ transport in MoO₃/WO₃ glasses reveals a strong correlation between pre-exponential factor and activation energy, which allows detection of the prevalence of conduction mechanism. Finally, the results demonstrate that Ag₂OWO₃ZnOP₂O₅ glass system is a promising electrically tunable material with significant contributions of ionic or polaronic conductivity depending on composition.

中文翻译：

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含WO ₃和MoO _3的Ag ₂ O-ZnO-P ₂ O ₅玻璃中混合电输运的性质

这项研究报告了xTMO-（30-0.5x）Ag ₂ O-（30-0.5x）ZnO的含银玻璃中电迁移的性质以及由TMO的不同类型和含量引起的结构变化的作用

40P ₂ ø ₅（TMO =的MoO ₃ / WO ₃，0≤X≤60摩尔％）的组合物。拉曼光谱显示在具有高WO ₃含量的玻璃中WO ₆单元成簇，而MoO _3的添加引起MoO ₆八面体向MoO ₄四面体的逐渐变化，两者均与磷酸盐单元交联而没有聚集。对于WO ₃玻璃，在303至513 K的温度下，当WO ₃为30–40 mol％时，观察到的直流电导率最小，随后WO _3的电导率增加此外，由于极化作用的增加。观察到的营业额表明从主要的离子迁移到主要的极化传输发生了明显的转变。相反，对于MoO ₃玻璃而言，在整个混合成分范围内电导率降低，表明在整个测量温度范围内，传输性质受离子成分的支配。对MoO ₃ / WO ₃玻璃中Ag ⁺，Li ⁺，Na ⁺迁移的比较研究表明，前指数因子与活化能之间存在很强的相关性，从而可以检测传导机制的普遍性。最后，结果表明Ag ₂ OWO ₃氧化锌P ₂ O ₅玻璃系统是一种有前途的电可调谐材料，根据组成的不同，其离子或极化电导率的贡献也很大。