PREPARATION OF YBA2CU3O7-X (YBCO) SUPERCONDUCTIVE FILM USING SOL-GEL METHOD

被引:20
作者
MASUDA, Y [1 ]
TATEISHI, T [1 ]
MATSUBARA, K [1 ]
OGAWA, R [1 ]
KAWATE, Y [1 ]
机构
[1] KOBELCO RES INST INC,CHUOU KU,KOBE 651,JAPAN
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 07期
关键词
YBCO SUPERCONDUCTOR; FILMS; SOL-GEL; HYDROLYSIS; DIPPING; COATING; YSZ SUBSTRATE;
D O I
10.1143/JJAP.30.1390
中图分类号
O59 [应用物理学];
学科分类号
摘要
Using alkoxides of Y and Ba and Cu-acetate as raw materials, Y Ba2Cu3O7-x (YBCO) superconductive films were produced through the sol-gel method. When the nonaqueous mixed solution was hydrolyzed under an appropriate condition, a pure and homogeneous YBCO powder could be prepared. Controlling the metal concentration and the temperature of the sol, precursor(gel) films were formed on YSZ substrate by dip-coating. And heating the films in the range of 200-degrees-950-degrees-C, changes of the films morphologies, the generated phases and the film reactions with the substrates were studied using scanning electron microscopy and X-ray diffraction. It has been known that to improve the superconductivity of the film it is necessary to sinter it at as high at 950-degrees-C and increase its thickness over about 3-mu-m after sintering. A superconductive film with T(c.off) = 75 K was obtained by adopting these conditions.
引用
收藏
页码:1390 / 1397
页数:8
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