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- W2351291294 abstract "The U-I characteristic of ZnO pressure-sensitive ceramics is analyzed, ZnO pressure-sensitive ceramics consists of grain crystal with different size, which is polygonal crystal. The U-I characteristic of ZnO pressure-sensitive ceramics consists of three area: the beforehand-breakdown area, the breakdown area and the rise area. The beforehand-breakdown area is linear nearly. The breakdown area is nonlinear, ZnO pressure-sensitive ceramics is used in this area. The nonlinearity of ZnO pressure-sensitive ceramics is worse in the rise area. The established original microcosmic model in low current and high current area is observed with electron microscopy and analyzed. U-I characteristic in the low current area is presented through experiment of actual several kind of specification MOV in the D.C. voltage according to microscopic model and grain boundary barrier and electronic trap theories. In low current area, the nonlinear resistance can not participate in the procedure of the electric conduction when the voltage is very low, and the U-I characteristic of ZnO pressure-sensitive ceramics is linear nearly. With increase of the voltage , the nonlinear resistance participates in the procedure of the electric conduction little by little,and the ZnO pressure-sensitive ceramics presents nonlinear. In the high current area, the inductance and the variety of the current are decisive factors. The electric conduction characteristic of various sectors has analyzed by electron microscopy, equivalent resistance of grain boundary layer is increased slowly due to asymmetry thickness of grain boundary layer and electron trap density in grain boundary layer,different electric mechanism of grain boundary layer and pure grain of ZnO brings up unique U-I characteristic of ZnO Pressure-sensitive Ceramics." @default.
- W2351291294 created "2016-06-24" @default.
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- W2351291294 date "2007-01-01" @default.
- W2351291294 modified "2023-09-25" @default.
- W2351291294 title "Microcosmic Analysis of U-I Characteristic of ZnO Pressure-sensitive Ceramics" @default.
- W2351291294 hasPublicationYear "2007" @default.
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