첨가물에 따른 고온 초전도 후막의 특성 = Properties of High-Temperature Superconducting Thick Film with additives

다국어 초록 (Multilingual Abstract)

In this study, by using the electrophoresis, preparation of YBCO superconducting wire deposited on metal Ag base wire was studied with its properties. YBCO powder could be prepared by solid state reactions with calcining and sintering processes. Superconducting wire prepared on metal Ag wire used as cathode of deposition base could be also fabricated in the YBCO/acetone-dispersed solution to obtain several tens of ㎛ thick films.
In the process of film deposition, a catalyst I₂added into the suspension solution was very useful for preparing thick film of YBCO, and BaF₂ of additive material was also necessary for preparing crack-free wire of YBCO superconductor.
As a result, YBCO superconducting wire added 2~3wt.% of BaF₂with catalyst, I₂had better deposition condition for uniform and dense YBCO wires, and critical current density, Jc was calculated at the value of 1,458A/㎠ (more than 10³A/㎠, 77K, 0[T]) of 30㎛ thick sample by 4-point prove method.

목차 (Table of Contents)

• 1.서론
• 2.실험
• 2.1 시료의 제조
• 2.2 전기영동전착
• 2.3 산소흡착 및 Iс측정
• 3.결과 및 고찰
• 3.1 YBCO 선재 전착막의 형성
• 3.2 YBCO 전착선재의 표면분석
• 3.3 YBCO 후막의 초전도 특성
• 4.결론