Electrical properties of BaTiO3-based NTC thermistors doped by BaBiO3 and CeO2

被引：0
|
作者：
Luo, Ying [1 ,2 ,3 ]
Liu, Xinyu [1 ,3 ]
Chen, Guohua [1 ]
机构：
[1] Research Center for Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
[2] Guilin Academy of Air Force, Guilin, 541004, China
[3] College of Materials Science and Engineering, Central South University, Changsha, 410083, China
来源：
Journal of Alloys and Compounds | 1600年 / 429卷 / 1-2期
关键词：
In our research it has been firstly found that BaTiO3 materials doped BaBiO3 only show negative temperature coefficient effect over a wide temperature range. Major phases present in the sintered bodies are BaTiO3 compounds with a perovskite structure and BaBiO3 compounds with a monoclinic structure. The influence of CeO2 addition on the electrical properties of BaTiO3-based negative temperature coefficient (NTC) thermistors has been studied. All the NTC thermistors prepared show a linear relationship between log resistivity and the temperature; indicative of NTC characteristics. At a given BaTiO3 and BaBiO3 content; as the amount of CeO2 in BaTiO3-based ceramics thermistors increases; the room temperature resistivity and the coefficient of temperature sensitivity (B constant) increase. © 2006 Elsevier B.V. All rights reserved;
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页码：335 / 337
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