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首页> 外文会议>Conference exhibition of the European Ceramic Society >Microstructural and Electrical properties of Ba_(0.5)Sr_(0.5)TiO_3 in bulk and thick film form
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Microstructural and Electrical properties of Ba_(0.5)Sr_(0.5)TiO_3 in bulk and thick film form

机译：BA_（0.5）SR_（0.5）TiO_3的微观结构和电性能，块状和厚膜形式

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Bulk Ba_(0.5)Sr_(0.5)TiO_3 (BST) has been prepared by two different methods―the sintering of fully calcined BST powder and the sintering of a mixture of BaTiO_3 and SrTiO_3 powders. The effect of these two different production routes on the microstructural properties has been assessed using XRD, SEM and density measurements. Samples produced from the BST powders began to densify at a much lower sintering temperature and (～95% compared to～80% for the samples produced from the mixed titanates). Electrical measurements at 1kHz indicate permittivities at the Curie point for the highest density samples of 17000 and 13000 respectively for the two routes, and dielectric losses = 10~(-2). Thick film (screen printed) samples have also been investigated and found to have permittivities approximately one quarter that of bulk material and much higher values of dielectric loss at low temperatures.
机译：通过两种不同的方法制备了Bulk Ba_（0.5）SR_（0.5）TiO_3（BST） - 完全煅烧BST粉末的烧结和BATIO_3和SRTIO_3粉末的混合物的烧结。通过XRD，SEM和密度测量评估了这两种不同生产路线对微观结构性质的影响。由BST粉末制备的样品开始在低温烧结温度下致密化，（与混合钛酸盐产生的样品相比〜80％相比，〜95％）。 1KHz的电气测量值分别为两个路线分别为17000和13000的最高密度样本的静电点，介电损耗= 10〜（-2）。还研究了厚膜（印刷）样品，发现允许大约四分之一的允许散装材料以及低温下的介电损耗值得得高。

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