YBa2Cu3O7—y膜中重离子无序的X射线衍射研究

我们发现ＹＢａ２Ｃｕ３Ｏ７－ｙ薄膜的实测Ｘ射线衍射强度与理论强度不一致，且用重离子坐标微变化和重离子替代无序解释了这一现象。与工艺、性能联系起来，可得到结论：这种无序与沉积所用的靶材和衬底材料有关，对超导转变温度无明显影响。     

DETERMINATION OF THE OXYGEN CONTENT IN YBa2Cu3O7-y FILMS

A method for determination of the oxygen content (y) in YBa₂Cu₃O_7-y films has been established, in which the lattice conetant difference (b-a) of the films was measured and used to fit the function of (b-a) vs y for the experimental data of bulk YBaaCuaO?-y given in the literature. It is suggested that the function of (b-a) vs y can indeed be used in the case of film. In this process the twin structure of the YBa₂Cu₃O_7-y films was used.     

DETERMINATION OF THE OXYGEN CONTENT IN YBa2Cu3O7-y FILMS

A method for determination of the oxygen content (y) in YBa₂Cu₃O_7-y films has been established, in which the lattice conetant difference (b-a) of the films was measured and used to fit the function of (b-a) vs y for the experimental data of bulk YBaaCuaO?-y given in the literature. It is suggested that the function of (b-a) vs y can indeed be used in the case of film. In this process the twin structure of the YBa₂Cu₃O_7-y films was used.     

YBCO大面积超导薄膜沉积工艺与微结构研究

采用中空柱状阴极直流磁控溅射方法制备了大面积ＹＢＣＯ超导薄膜。应用ＸＲＤ方法,对在３０×３０ｍｍ＾２ＬａＡｌＯ３衬底上沉积的ＹＢＣＯ薄膜进行了结晶完整性、均匀性的测定。对同一样品,使用透射电子显微镜对薄膜和衬底间的界面进行了研究。