The Preparation Of Nano-Barium Titanate And The Study Of The Dielectric Property

The preparation and the dielectricity of BaTiO₃ have been studied to discuss the feasibility that nano-barium titanate is being absorbing materials. The paper is discussed from the following aspects:1. The article introduces the actuality and the improvement of the study on absorbing materials which include the traditional ones and the new ones. Especially the study improvement of nano-absorbing materials is a keystone. Furthermore, absorbing principle of absorbing materials is been particularly discussed.2. BaTiO₃ powders are prepared by the method of Sol-gel with two raw materials respectively. One is Ba(Ac)₂ and the other is Ba(OH)₂-H₂O. The result indicates that the powders prepared with Ba(Ac)₂ are better by testing, because their granularity is small and equal.3. The dielectric constant- e and dielectric loss-tgδ of nano-bariumtitanate powders are tested respectively when temperature and frequency change. The result shows that the dielectric constant is higher than the oneof square BaTiO₃. The value of tgd is large and stable with the increase offrequency, which indicates that the absorbing capability of nano-BaTiO₃ is preferable in large extension of frequency.