Optimization of oxygenation process in YBCO tapes fabricated by TFA-MOD method

✍ Scribed by N. Chikumoto; T. Machi; Y. Tokunaga; T. Izumi; S. Tajima

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 135 KB
• Volume: 426-431
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2005.01.062

✦ Synopsis

The effect of oxygen doping on the superconducting properties, such as T c , J c and the irreversibility line, of YBCO coated conductor prepared by the TFA-MOD method was investigated. We observed a systematic change of T c value as oxygen annealing temperature, T a indicating the oxygen doping level was successfully modified by the heat treatment. The oxygen doping caused an upward shift of the irreversibility line as well as an increase of J c at wide temperature and field range. We also performed a high-temperature X-ray diffraction measurement to observe the oxygen absorption behavior. The result suggests the mobility of oxygen becomes very slow at the temperature below 350 °C.