多晶Ag基带上YBCO超导膜的TFA-MOD制备法

Fabrication of long YBCO films on Ag base tape

探讨了三氟乙酸盐受热分解 (TFA MOD)方法在多晶织构Ag基片上制备YBCO膜的工艺参数与薄膜的成分和取向、表面形貌及超导电性之间的关系。通过优化工艺参数 ,在 1cmAg{ 110 }〈110〉基带上制备了成分单一、纯c 轴取向及较好面内取向的YBCO膜 ,Tc=90K ,Jc=15 0 0 0A/cm2 。

The influences of processing parameters on phase purity and texture, surface morphology and superconducting properties of YBCO films fabricated by TFA-MOD method were discussed. These films prepared under optimum conditions have pure c-axis texture and are good in-plane texture with T_c of 90 K and J_c of 15 000 A/cm^2 at 77 K in self-field.