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首页> 外文期刊>Journal of Materials Science >Characterization and electrical properties of sol-gel synthesized (Sr, Pb)TiO3 powders
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Characterization and electrical properties of sol-gel synthesized (Sr, Pb)TiO3 powders

机译：溶胶-凝胶合成（Sr，Pb）TiO3粉末的表征和电性能

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Y-doped (Sr, Pb)TiO3 powders were prepared by a sol-gel route as well as the calcination of gel precursors. The results of DTA/TG showed that the thermal decomposition of dry precursors mainly occurred below 600degreesC. Meanwhile, infrared ray (IR) spectrum meter, X-ray diffraction (XRD) meter and transmission electron microscope (TEM) were used to characterize the synthesized powders, respectively. Using the synthesized powders as starting materials, Sr0.5Pb0.5TiO3 semiconducting ceramics were fabricated at 1050degreesC. Sample's room temperature resistivity is 1.51 x 10(2) Omega.cm, its resistivity jumps more than 5 orders of magnitude above the Curie temperature (T-c). With increasing the soaking time, the room temperature resistivity and the negative temperature coefficient of resistance (NTCR) effect below T-c increased, showing the electrical properties of ( Sr, Pb) TiO3 thermistors are obviously affected by PbO loss. (C) 2004 Kluwer Academic Publishers. [References: 18]
机译：通过溶胶-凝胶法以及煅烧凝胶前体制备了掺Y的（Sr，Pb）TiO3粉末。 DTA / TG的结果表明，干燥前体的热分解主要发生在600℃以下。同时，分别使用红外光谱仪，X射线衍射仪和透射电子显微镜（TEM）对合成粉末进行表征。以合成粉末为原料，在1050℃下制备了Sr0.5Pb0.5TiO3半导体陶瓷。样品的室温电阻率为1.51 x 10（2）Ω.cm，比居里温度（T-c）高出5个数量级。随着浸泡时间的增加，室温电阻率和低于T-c的负电阻温度系数（NTCR）效应增加，表明（Sr，Pb）TiO3热敏电阻的电性能受到PbO损耗的明显影响。 （C）2004 Kluwer学术出版社。 [参考：18]

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