Preparation of Crack-free YBCO Films by EPD on Silver

  • Soh, Dea-wha (Department of Electronic Engineering, Myongji University) ;
  • Li, Young-mae (Samtec) ;
  • Korobova N. (Combustion Problem Institution, Kazakhstan) ;
  • Park, Sung-Jai (Department of Electronic Engineering, Kyungwon College)
  • Published : 2003.03.01

Abstract

Electrophoretic deposition (EPD) of alcohol YBCO suspensions on the Ag wire electrode is studied. Poly(ethylene glycol) was coordinated to a structure formed by the EPD process with YBCO particles. The suspension is characterized in terms of zeta potential and conductivity. 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 c-axis 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

Electrophoretic deposition (EPD);Poly (ethylene glycol);Suspension;Crack-free;YBCO

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