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首页> 外文期刊>Journal of Materials Research >Dielectric ceramics in the BaO-Sm_2O_3-TiO_2-Ta_2O_5 quaternary system
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Dielectric ceramics in the BaO-Sm_2O_3-TiO_2-Ta_2O_5 quaternary system

机译：BaO-Sm_2O_3-TiO_2-Ta_2O_5四元体系中的介电陶瓷

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摘要

Dielectric ceramics in the BaO--Sm_2O_3-TiO_2--Ta_2O_5, quatemary system were prepared and characterized for five typical compositional BaSm_5Ti_7Ta_3O_30.' Ba_2Sm_4Ti_4Ta_4O_30, Ba_3Sm_3Ti_5Ta_5O_30,'Ba_4Sm_2Ti_4Ta_6O_30 and Ba_5SmTi_3TaO_30.' The latter three compositions tended to form the tungsten--bronze phase, and the ceramics based on these compositions had a high dielectric constant (l34-l75) and a low dielectric loss (on the order of 10~3) but a larger temperature coefficient of the dielectric constant. Meanwhile, the former two compositions generally had a more complex phase constitution, containing the tungsten--bronze phase combined with some unknown phase, and a relatively small temperature coefficient of the dielectric constant in the temperature range of 20 to 85 deg C could be achieved in these two compositions.
机译：制备了BaO--Sm_2O_3-TiO_2--Ta_2O_5四元体系中的介电陶瓷，并对五种典型的BaSm_5Ti_7Ta_3O_30进行了表征。 Ba_2Sm_4Ti_4Ta_4O_30，Ba_3Sm_3Ti_5Ta_5O_30，“ Ba_4Sm_2Ti_4Ta_6O_30和Ba_5SmTi_3TaO_30”。后三种成分趋于形成钨青铜相，基于这些成分的陶瓷具有高介电常数（134-175）和低介电损耗（大约10〜3），但温度系数较大介电常数同时，前两种成分通常具有更复杂的相组成，包含钨-青铜相和一些未知相，并且可以在20至85℃的温度范围内获得相对较小的介电常数温度系数。在这两种成分中。

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