The ba0 . 7sr0 . 3tio3 / pt / ti / sio2 / si multilayered heterostructures were also successfully prepared . the xrd analysis shows that bst thin films are perfect perovskite structure . the edax analysis reveals that ti content is rather higher in our bst thin films according to Edax成分分析表明bst薄膜样品中钦的含量明显偏高,这可能是由于五是高熔点金属,较ba 、 sr金属的熔点都高出许多之故。