Filled oxygen-deficient strontium barium niobates
Filled oxygen-deficient strontium barium niobates
复制标题
填充型缺氧铌酸锶钡
DOI：
10.1111/jace.14598
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发表时间：
2017
影响因子：
3.9
通讯作者：
Randall, Clive A.
中科院分区：
文献类型：
--
作者：
Chan, Jason H.;Bock, Jonathan A.;Guo, Hanzheng;Trolier-McKinstry, Susan;Randall, Clive A.
使用常规烧结在缺氧条件下制造从钡端元到Sr：Ba比率为80：20的填充的铌酸锶钡（SBN，SrxBa6−xNb10O30−δ）组合物。当在约1.0 × 10−16atmpO2的还原条件下在1350°C下烧结时获得单相试样。使用扫描电子显微镜和透射电子显微镜的X射线衍射和能量色散光谱来确认相纯度。晶格参数来自Rietveld精化被用来跟踪Vegard定律的固溶体。结果发现，Vegard定律是遵循两个范围内，这被认为是由于优先占位的A网站的Sr含量的变化。填充SBN青铜的成功制造为SBN固溶体的电特性的相关趋势提供了途径。
Filled strontium barium niobate (SBN, SrxBa6−xNb10O30−δ) compositions from the barium end‐member to a Sr:Ba ratio of 80:20 were fabricated using conventional sintering under oxygen‐deficient conditions. Single‐phase specimens were obtained when sintered at 1350°C under a reducing condition of about 1.0 × 10−16atmpO2. X‐ray diffraction and energy dispersive spectroscopy using scanning electron microscopy and transmission electron microscopy were used to confirm the phase‐purity. Lattice parameters derived from Rietveld refinements were used to trace Vegard's Law over the solid solution. It was found that Vegard's Law is followed over two ranges, which is believed to be due to preferential site occupancy of the A sites as the Sr content changes. The successful fabrication of filled SBN bronzes provides an avenue for correlating trends in electrical characteristics of the SBN solid solution.