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http://dx.doi.org/10.9714/psac.2006.8.3.013

Effect of nano size $Y_2O_3$ addition on the superconducting properties and microstructure of YBCO thin film prepared by TFA-MOD method.  

Park Jin-A (한국산업기술대 에너지대학원)
Kim Byung-Joo (한국산업기술대 에너지대학원)
Hong Gye-Won (한국산업기술대 에너지대학원)
Lee Hee-Gyoun (한국산업기술대 신소재공학과)
Yoo Jai-Moo (한국기계연구원 신기능재료연구본부)
Kim Young-Kuk (한국기계연구원 신기능재료연구본부)
Publication Information
Progress in Superconductivity and Cryogenics / v.8, no.3, 2006 , pp. 13-17 More about this Journal
Abstract
The effect of the addition of the nano size $Y_2O_3$ powder on the microstructurte and superconducting properties of YBCO thin film deposited on LAO single crystalline substrate by TFA-MOD method was studied. Nano size $Y_2O_3$ powder was added to the stoichiometric precursor solution with a cation ratio of Y : Ba . Cu = 1 : 2 : 3 prepared using TFA as chelating agent. Precursor solutions with and without $Y_2O_3$ addition were coated on $LaAlO_3(100)$ single crystalline substrates by dip coating method. Calcination and conversion heat treatments were performed in controlled atmosphere containing moisture Current carrying capacity(Jc) of YBCO film was enhanced about 50% by $Y_2O_3$ doping and it is thought to be due to the better connectivity of YBCO grains and/or the flux pinning by the $Y_2O_3$ particles embedded in YBCO grains.
Keywords
superconductor; coated conductor; YBCO; flux pinning;
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