Preparation method of manganese and bismuth co-doped barium strontium titanate ceramic material with high dielectric property

The invention belongs to the technical field of material science and engineering, and discloses a preparation method of a manganese and bismuth co-doped barium strontium titanate ceramic material with high dielectric property. Titanium tetrachloride, barium chloride, strontium chloride, oxalic acid, manganese oxide and bismuth oxide react by adopting a liquid phase method to obtain uniform barium strontium titanate powder. Co-doping is selected in the aspect of doping, and preparation of barium strontium titanate through co-doping of manganese and bismuth is a first case. The preparation method prominently shows that the barium strontium titanate powder prepared by the reaction is smaller in particle size, uniform and free of agglomeration, and has the characteristics of high dielectric constant and low dielectric loss. 本发明属于材料科学与工程技术领域，公开了一种具有高介电性能的锰和铋共掺杂钛酸锶钡陶瓷材料的制备方法。本发明采用液相法将四氯化钛、氯化钡、氯化锶、草酸以及氧化锰和氧化铋反应获得钛酸锶钡均匀粉体。在掺杂方面选择了共掺杂，并且锰和铋共掺杂制备钛酸锶钡是首例。制备方法突出表现反应制得的钛酸锶钡粉体的粒径更小且均匀无团聚，具有介电常数高，介电损耗低的特点。