High temperature NTC BaTiO3-based ceramic resistors
High temperature NTC BaTiO3-based ceramic resistors
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DOI：
10.1016/j.matlet.2005.06.065
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发表时间：
2005-12
影响因子：
3
通讯作者：
Ying Luo;Xinyu Liu
中科院分区：
文献类型：
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作者：
Ying Luo;Xinyu Liu
在我们的研究中，首次发现BaTiO_3材料掺杂BaBi_3化合物只在较宽的温度范围内表现出NTC效应。研究了BaTiO_3基NTC热敏电阻的组成对微结构和电性能的影响。烧结体中的主要相是具有钙钛矿结构的BaTiO 3化合物和具有单斜结构的BaBiO 3化合物的固溶体。样品的平均晶粒尺寸随BaBiO 3含量的增加而增大。随着BaBiO 3含量的增加，样品的ρ 450和B450/600常数减小。
In our research it was firstly found that BaTiO3materials doped BaBiO3compounds only showed NTC effect in wide temperature scale. The effect of the composition on the microstructure and electrical properties of BaTiO3-based NTC thermistors was studied. Major phases present in the sintered bodies were the solid solutions of BaTiO3compounds with a perovskite structure and BaBiO3compounds with a monoclinal structure. The average grain size of the samples increased with increasing BaBiO3contents. It is apparent that the samples' ρ450and B450/600constant decreased with an increase in BaBiO3content.