【摘 要】
：
The resistance-temperature properties of porous (Ba, Pb)TiO3 semiconductor ceramic were systematically studied. It was found that the resistance of (Ba, Pb)TiO3
【机 构】
：
Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education,College of Sc
【基金项目】
：
Key Problems Foundation of Shanxi Province;太原理工大学校科研和教改项目
论文部分内容阅读
The resistance-temperature properties of porous (Ba, Pb)TiO3 semiconductor ceramic were systematically studied. It was found that the resistance of (Ba, Pb)TiO3 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℃ 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% to 93%, the resistance of (Ba, Pb)TiO3 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)TiO3 ceramic was analyzed qualitatively.
其他文献
In this paper, Tanaka formulae for (α, d,β)-superprocesses in the dimensions where the local time exists are established under the optimal initial condition.
In this paper, cable-like PEDOT/PSS-ZnO nanowires are successfully fabricated under vacuum condition by self-assembly of the PEDOT/PSS-ZnO composite initially p
考虑各种相关性,估算出ψ′与J/ψ之间非粲强衰变的比值Q为(26.0±3.5)%.在估算过程中,为了获得相关系数或方差,采用了多种方法.这些方法在数据的相关性分析中具有实际的应用
In this paper, we study some packings in a cube, namely, how to pack n points in a cube so as to maximize the minimal distance. The distance is induced by the L
In computer aided geometric design, the degree reduction of the parameter curve is a key technique in data exchange and data compression. The various existing m
Objective: To compare the dose requirements of continuous infusion of rocuronium and atracurium throughout orthotopic liver transplantation (OLT) in humans. Met
Birnessite is a common weathering and oxidation product of manganese-bearing rocks. An O2 oxidation procedure of Mn(OH)2 in the alkali medium has been used to s
We study the tail probability of the stationary distribution of nonparametric nonlinear autoregressive functional conditional heteroscedastic (NARFCH) model wit
A weakly nonlinear theory is presented to study the effects of slippage on the stability of the ultra-thin polymer films.The nonlinear mathematical model is con
This paper describes experience with the sequencing of synthetic segment peptides of gp41 which are used in trimeric peptides as potential peptide-based vaccine