The abnormal sensitivity and its mechanism of (Ba, Pb)TiO_3 semiconductor ceramics

TIAN Yuming; XU Mingxia; HUANG Ping

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The abnormal sensitivity and its mechanism of (Ba, Pb)TiO_3 semiconductor ceramics

机译：（Ba，Pb）TiO_3半导体陶瓷的异常敏感性及其机理

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The resistance-temperature properties of porous (Ba, Pb)TiO_3 semiconductor ceramic were systematically studied. It was found that the resistance of (Ba, Pb)TiO_3 ceramic having been placed in the air for a long time was abnormally increased with the increase of the temperature from the room temperature to 70 deg C prior to the Curie point. Further research showed that this abnormal resistance-temperature property was linked to its humidity sensitivity. When the relative humidity changed from 11 percent to 93 percent, the resistance of (Ba, Pb)TiO_3 ceramic decreased three orders of magnitude. Furthermore, the humidity-resistance was approximately linear in single logarithm coordinate. According to the surface adsorption, grain-boundary potential barrier and ferroelectric-paraelectric phase transformation, the specific sensitive mechanism of (Ba, Pb)TiO_3 ceramic was analyzed qualitatively.

机译：系统地研究了多孔（Ba，Pb）TiO_3半导体陶瓷的电阻-温度特性。结果发现，长时间放置在空气中的（Ba，Pb）TiO_3陶瓷的电阻随着温度从居里点之前从室温升高到70摄氏度而异常增加。进一步的研究表明，这种异常的电阻温度特性与其湿度敏感性有关。当相对湿度从11％变为93％时，（Ba，Pb）TiO_3陶瓷的电阻降低了三个数量级。此外，在单一对数坐标下，耐湿性近似为线性。根据表面吸附，晶界势垒和铁电-顺电相变，定性分析了（Ba，Pb）TiO_3陶瓷的比敏机理。

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来源
《Chinese science bulletin》 |2005年第9期|共4页
作者
TIAN Yuming; XU Mingxia; HUANG Ping;
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正文语种 eng
中图分类自然科学现状及发展;
关键词
(Ba; Pb)TiO_3 semiconductor ceramic; specific sensitivity; grain-boundary potential barrier; surface adsorption; ferroelectric-paraelectric phase transformation;

机译：（Ba;Pb）TiO_3半导体陶瓷;比灵敏度;晶界势垒;表面吸附;铁电-顺电相变;

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1. The abnormal sensitivity and its mechanism of (Ba, Pb)TiO_3 semiconductor ceramics [J] . TIAN Yuming, XU Mingxia, HUANG Ping Chinese science bulletin . 2005,第9期

机译：（Ba，Pb）TiO_3半导体陶瓷的异常敏感性及其机理
2. Mechanisms of electromechanical response in (1 - x)Ba(Zr_(0.2)Ti_(0.8))O_3-x(Ba_(0.7)Ca_(0.3))TiO_3 ceramics [J] . Matias Acosta, Nikola Novak, George A. Rossetti Jr., Applied Physics Letters . 2015,第14期

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The abnormal sensitivity and its mechanism of (Ba, Pb)TiO_3 semiconductor ceramics

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