Fabrication of YBCO superconducting microarray by sol-gel process using photosensitive metal chelates  

作　　者：ZHAO GaoYang JIA JiQiang JIANG Fen LEI Li MA JunShan 

机构地区：[1]School of Materials Science and Engineering,Xi'an University of Technology [2]Advanced Materials Analysis and Test Center,Xi'an University of Technology

出　　处：《Science China(Technological Sciences)》2013年第6期1409-1414,共6页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51072163);the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20096118110002);the Special Funds for the Construction of Key Disciplines Project of Shanxi Province

摘　　要：We used yttrium acetate, barium acetate, and copper acetate as the starting materials, benzalacetone (BzAcH) as chemical modifier, and methanol (MEOH) as solvent to synthesize a stable fluorine-free YBCO precursor sol. The coated YBCO gel film using this precursor sol exhibited photosensitivity to UV irradiation at a wavelength of 330 nm. After the subsequent exposing, the YBCO gel film showed a decreased solubility in several organic solvents. Based on the photosensitivity of the YBCO/BzAcH gel film, YBCO superconducting microarray with the pitch of 5 μm was fabricated by irradiating the gel film with UV light through a mask, followed by leaching the unirradiated area in a mixture solvent of methanol and n-butyl alcohol with the volume ratio of 1:1. After proper heat treatment the x-ray diffraction result showed that the as-prepared arrays were highly c-axis oriented and with a high T c by this new photosensitive sol-gel process.

关 键 词：SUPERCONDUCTORS YBCO PHOTOSENSITIVITY sol-gel MICROARRAY 

分 类 号：TM26[一般工业技术—材料科学与工程]