The application of ( Sr, Ba) TiO_3 thin films used in DRAM ( Dynamic Random Acess Memory), phase shifters and tunable microwave devices has been one of the significance fields in the investigation and fabrications. (Sr,Ba)TiO3薄膜在DRAM、相位移器等领域的应用前景已成为国内外材料研究的主要领域之一。