This invention relates to a SBT-BST heterogeneous dielectric material, its composition method and the application, in which, said material takes a Si chip as the substrate and is composed of multi-layer substrate electrode and multi-layer film depositing on it, the electrode is composed of a Si chip and SiO2, Ti and Pt films depositing on the surface of the Si chip orderly, the multi-layer film is formed by SBT and BST films of N periods stacked alternately, and N is 3-99. The composition method of said material includes: depositing the SBT and BST films on a Pt/Ti/SiO2/Si multi-layer substrate electrode alternately with the PLD technology. The application of the material includes: taking the material as the substrate and preparing IC active device MOS transistors on the SBT-BST heterogeneous dielectric material multi-layer film of the substrate with the standard IC technics. |