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- W2381152573 abstract "The electrical properties of TiO2-based varistor ceramics doped with Ta_2O_5 and Nb_2O_5 were studied. Test samples were prepared with the formula of TiO_2+0.003 (in mole, the same below) (SrO+Bi_2O_3+SiO_2)+xTa_2O_5+yNb_2O_5, where x=0.00075, y=0; x=0.000375, y=0.000375 and x=0, y=0.00075 respectively. Based on the results of measurements of electric current—voltage and capacitance, impedance analysis and barrier height measurement, the working mechanism of Ta_2O_3 and Nb_2O_5 was analyzed. It is found that the sample of x=0.00075 exhibits a lowest breakdown voltage gradient (E_(10mA)) of 7.9 V/mm and a biggest apparent dielectric constant of 5.88×10~4, while the sample of y=0.00075 exhibits a highest breakdown voltage gradient (E_(10mA)) Of 48.9 V/mm and a smallest apparent dielectric constant of 1.39×10~4. It shows that the doping of Ta_2O_5 can reduce the breakdown voltage gradient and raise the apparent dielectric constant effectively." @default.
- W2381152573 created "2016-06-24" @default.
- W2381152573 creator A5017144626 @default.
- W2381152573 date "2004-01-01" @default.
- W2381152573 modified "2023-09-28" @default.
- W2381152573 title "INFLUENCE OF Ta_2 O_5 AND Nb_2 O_5 ON ELECTRICAL PROPERTIES OF TiO_2-BASED VARISTOR CERAMICS" @default.
- W2381152573 hasPublicationYear "2004" @default.
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