DOI QR코드

DOI QR Code

Preparation of Crack-free HTS YBCO Films by EPD Method

  • Soh, Dea-Wha (Department of Electronic Engineering, College of Engineering, Myongji University) ;
  • Li Yingmei (Department of Electronic Engineering, College of Engineering, Myongji University) ;
  • Nataly Korobova (School of Materials Science and Engineering, Seoul National University)
  • Published : 2003.10.01

Abstract

Electrophoretic deposition (EPD) of alcohol YBCO suspensions on the Ag wire electrode is studied. Polyethyleneglycol was coordinated to a structure formed by the EPD process with YBCO particles. The d.c electric fields of 200-300 V/cm are applied for 1-10 min. The optimal condition for the EPD allows modifying the properties and microstructure of the deposited films. Superconducting coatings with nanometer-sized pores and a preferred orientation along the caxis were prepared from the result with chemically modified precursor solution. In contrast, YBCO coatings of submicrometer-sized pores and randomly orientated grains were prepared from the solution without PEG.

Keywords

References

  1. J. G. Bednorz and K. A. Muller, 'New high T, superconductors', Z. Phys. B, Vol. 64, p. 189, 1986 https://doi.org/10.1007/BF01303701
  2. D. W. Soh and N. Korobova, 'Peculiarities of SHS and solid state synthesis of $ReBa_{2}Cu_{3}O_{7-x}$ materials J. of KIEEME(in Korean), Vol. 15, No. 3, p. 275 2002
  3. D. W. Soh, J. C. Park, Y. M. Li, and Y. J. Cho 'Preparation of superconducting YBCO thick film by electrophoresis', Physica C, Vol. 337, No. 1-4, p. 44 2000 https://doi.org/10.1016/S0921-4534(00)00053-8
  4. D. W. Soh, J. C. Park, Y. M. Li, and S. N. Chu 'Preparation of YBCO superconducting wire by electrophoretic thick film deposition', J. of KIEEME(in Korean), Vol. 12, No. 10, p. 937, 1999
  5. D. W. Soh and Y. W. Jeon, 'Superconducting film fabrication using field assisted electrophoresis', J. of KIEEME(in Korean), Vol. 16, No. 2, p. 157, 2003
  6. D. W. Soh, N. Korobova, and Z. G. Fan, 'Moisture corrosion and surface protection of YBCC superconductors', II Intern. Symposium, 'Physics & Chemistry of Carbon Matehals', Kazakhastan Almaty, p. 33, 2002
  7. B. Deriaguin and L. Landau, 'Theory of stability of highly charged lyophobic sols and adhesion of highly charged particles in solutions of electrolytes', Acta Physicochem., USSR, Vol. 14, p. 633, 1941
  8. E. Verwey and J. Overbeek, 'Theory of stability of lyophobic colloid', Elsevier Science, 1948