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- W2369156772 abstract "In order to improve the electric characteristics of BaTiO_3 ceramics, the penetration of Sm element into BaTiO_3 ceramics in gas state and the effects on electric characteristics of BaTiO_3 ceramics were studied. The results show that the penetration of Sm element makes the electric characteristics of BaTiO_3 ceramics chang obviously. The resistivity of Sm-penetration BaTiO_3 ceramics decreases obviously, when the Sm element content is 0.002, the penetration temperature is 860 ℃ and the penetration time is 4 h, the resistivity decreases to the smallest, which changes from 4.3×10~9 Ω·m to 2.1×10~2 Ω·m, and the conductance increases with the increase in frequency and temperature, the electrical conductivity becomes better. The grain resistance of Sm-penetration BaTiO_3 ceramics exhibits PTC effect, but the grain boundary resistance decreases continuously with the increase in temperature. The regularity of the total resistance is similar to the grain boundary resistance, the PTC effect is nonexistence, and is inclined to change to conductor. The dielectric constant (e) of Sm-penetration BaTiO_3 ceramics increases visibly at lower frequency. The dielectric constant exhibits PTC effect,and the Curie-temperature (T_c) has gone up to 128.9 ℃." @default.
- W2369156772 created "2016-06-24" @default.
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- W2369156772 date "2004-01-01" @default.
- W2369156772 modified "2023-09-25" @default.
- W2369156772 title "Gas penetration of Sm into BaTiO_3ceramics and their electric characteristics" @default.
- W2369156772 hasPublicationYear "2004" @default.
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