Zr-doped YBCO Film Prepared by Fluorine-reduced MOD Method

Abstract

Through replacing copper Tri-fluoroacetate by copper α-methacrylic in Metal Organic Deposition(MOD) process,the total amount of fluorine in YBCO precursor solution was reduced by about 50%.As a result,the calcination period for YBCO precurse film was dramatically reduced.The calcination time was reduced to 2h,only one seventh of that in all-Fluorine MOD process.X-ray diffraction and scanning electronic microscope(SEM) measurements show that YBCO films have strong YBCO(00l) peaks and crack-free surface.The critical temperture(Tc) and critical current density(Jc at self-field,77K) are 90K and 2.84MA/cm2,respectively.Furthermore,the property of YBCO film prepared by the fluorine-reduced MOD method is enhanced greatly by incorporating 6mol% Zr element into the film.