High Temperature Superconducting Thick Films

by use of EPD Method (II)

Soh Deawha1, Korobova N.1, Park Jungcheul2

1Division of Electronics, Information & Comm. Eng., Myongji University, Yongin, 449-728, R. Korea

2Dept. of Electronics, Kyungwon College, Sungnam, 461-701, R. Korea


High temperature superconducting (HTS) thick films deposited on metal Ag wire were prepared with YBCO and BSCCO powders by electrophoretic deposition method. I2 was used as additives for surface charge of YBCO and BSCCO particles. When 2-3 wt.% BaF2 was added in the YBCO suspension, the pores and cracks of film surface were decreased and film density could be increased. In case of YBCO films, the critical current density (Jc) was calculated at the value of 1458 A/cm2 (77 K, 0 K) by 4 point prove method. BSCCO films had less cracks than YBCO films, and the critical current density (Jc) was obtained more than 104 A/cm2.