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首页> 外文期刊>Journal of Materials Science. Materials in Electronics >Aging effects on dielectric properties of barium neodymium titanium tantalate ceramics
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Aging effects on dielectric properties of barium neodymium titanium tantalate ceramics

机译：时效对钡钕钽酸钛陶瓷介电性能的影响

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摘要

The aging effects on crystal structures and dielectric properties were investigated in BapNd6-pTi8-pTa2+pO30 (p = 3, 4 and 5) ceramics with tungsten bronze structure. From XRD analyses on fresh and aged specimens, the slight change of crystal constant was concluded in BapNd6-pTi8-pTa2+pO30 ceramics. Strong aging effects on the dielectric properties were observed in the present ceramics. After aging, a slightly decreased dielectric constant was observed combined with a significantly reduced dielectric loss in all the three compositions. These results had been discussed in term of the disorder-order state of ions at A- and B-sites. From tolerance factor and electronegativity difference, the stability was discussed for the filled type tungsten bronze phase.
机译：在具有钨青铜结构的BapNd6-pTi8-pTa2 + pO30（p = 3、4和5）陶瓷中研究了时效对晶体结构和介电性能的影响。通过对新鲜和老化样品的XRD分析，可以得出BapNd6-pTi8-pTa2 + pO30陶瓷的晶体常数略有变化。在本陶瓷中观察到对介电性能的强烈老化作用。老化后，在所有三种组合物中观察到介电常数略有降低，同时介电损耗也明显降低。这些结果已经按照离子在A和B位置的无序状态进行了讨论。从容差系数和电负性差异出发，讨论了填充型钨青铜相的稳定性。

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