Epitaxial YBCO superconducting films were deposited on the single crystal LaAlO3 (001) substrate by metal organic deposition method. All YBCO films were fired at 820 degrees C in humidity range of 2.6%-19.7% atmosphere. Microstructure of YBCO thin films was analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). Superconducting properties of YBCO films were measured by four-probe method. XRD results showed that the second phase (such as BaF2)and a-axis-oriented grains existed in the films prepared at 2.6% humidity condition; a-axis-oriented grains increased in the film prepared at higher than 4.2% humidity condition; almost pure c-axias-oriented grains existed in the films fired at 4.2% humidity condition. Morphologies of the YBCO films showed that all films had a smooth and crack-free surface. YBCO film prepared at 4.2% humidity condition showed J(c) value of 3.3 MA/cm(2) at 77 K in self-field.
Wang LH,Li T,Gu HW,et al. Effect of humidity on microstructure and properties of YBCO film prepared by TFA-MOD method[J]. Journal of Rare Earths,2009,27,3,:486-489.
APA
王连红,Li T,Gu HW,&Wang LH.(2009).Effect of humidity on microstructure and properties of YBCO film prepared by TFA-MOD method.Journal of Rare Earths,27(3),486-489.
MLA
王连红,et al."Effect of humidity on microstructure and properties of YBCO film prepared by TFA-MOD method".Journal of Rare Earths 27.3(2009):486-489.
; Li T
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