Presentation Information
[24p-12P-5]Phase stable region and superconducting properties of Y247 superconductor
〇Tetsuya Matsushita1, Haruto Niitsu1, Takanori Motoki1, Jun-ichi Shimoyama1 (1.Aoyama Gakuin Univ.)
Keywords:
superconductivity,Y247
RE247 has an alternating stacked structure of RE123 and RE124, and has a narrow formation conditions between RE123 and RE124 under high temperature and high oxygen partial pressure. RE247 is also known as a high Tc material, and Y247 has been reported to show Tc approximately 95 K, which is higher than the Tc of Y123 (92 K). However, Tc tends to decrease as the ionic radius of RE3+ increases due to RE/Ba solid solution for samples sintered at high temperatures and high oxygen partial pressures.
In this study, I prepared RE247 under various sintering and post-annealing conditions to explore the determining factors of critical temperature of RE247 superconductors.
In this study, I prepared RE247 under various sintering and post-annealing conditions to explore the determining factors of critical temperature of RE247 superconductors.